1
|
Elmahjoubi A, Shoker MB, Pagès O, Torres VJB, Polian A, Postnikov AV, Bellin C, Béneut K, Gardiennet C, Kervern G, En Naciri A, Broch L, Hajj Hussein R, Itié JP, Nataf L, Ravy S, Franchetti P, Diliberto S, Michel S, Abouais A, Strzałkowski K. Vibrational-mechanical properties of the highly-mismatched Cd 1-xBe xTe semiconductor alloy: experiment and ab initio calculations. Sci Rep 2023; 13:14571. [PMID: 37666909 PMCID: PMC10477277 DOI: 10.1038/s41598-023-39248-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 07/21/2023] [Indexed: 09/06/2023] Open
Abstract
The emerging CdTe-BeTe semiconductor alloy that exhibits a dramatic mismatch in bond covalency and bond stiffness clarifying its vibrational-mechanical properties is used as a benchmark to test the limits of the percolation model (PM) worked out to explain the complex Raman spectra of the related but less contrasted Zn1-xBex-chalcogenides. The test is done by way of experiment ([Formula: see text]), combining Raman scattering with X-ray diffraction at high pressure, and ab initio calculations ([Formula: see text] ~ 0-0.5; [Formula: see text]~1). The (macroscopic) bulk modulus [Formula: see text] drops below the CdTe value on minor Be incorporation, at variance with a linear [Formula: see text] versus [Formula: see text] increase predicted ab initio, thus hinting at large anharmonic effects in the real crystal. Yet, no anomaly occurs at the (microscopic) bond scale as the regular bimodal PM-type Raman signal predicted ab initio for Be-Te in minority ([Formula: see text]~0, 0.5) is barely detected experimentally. At large Be content ([Formula: see text]~1), the same bimodal signal relaxes all the way down to inversion, an unprecedented case. However, specific pressure dependencies of the regular ([Formula: see text]~0, 0.5) and inverted ([Formula: see text]~1) Be-Te Raman doublets are in line with the predictions of the PM. Hence, the PM applies as such to Cd1-xBexTe without further refinement, albeit in a "relaxed" form. This enhances the model's validity as a generic descriptor of phonons in alloys.
Collapse
Affiliation(s)
- A Elmahjoubi
- LCP-A2MC, UR 4632, Université de Lorraine, 57000, Metz, France
| | - M B Shoker
- LCP-A2MC, UR 4632, Université de Lorraine, 57000, Metz, France
- Department of Physics and Materials Science, University of Luxembourg, 41 rue du Brill, 4422, Belvaux, Luxembourg
| | - O Pagès
- LCP-A2MC, UR 4632, Université de Lorraine, 57000, Metz, France.
| | - V J B Torres
- Departamento de Fisica and i3N, Universidade de Aveiro, 3810 - 193, Aveiro, Portugal
| | - A Polian
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université - UMR CNRS 7590, 75005, Paris, France
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48, 91192, Gif-sur-Yvette Cedex, France
| | - A V Postnikov
- LCP-A2MC, UR 4632, Université de Lorraine, 57000, Metz, France
| | - C Bellin
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université - UMR CNRS 7590, 75005, Paris, France
| | - K Béneut
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université - UMR CNRS 7590, 75005, Paris, France
| | - C Gardiennet
- Laboratoire de Cristallographie, Résonance Magnétique et Modélisations, CRM2, UMR 7036, Université de Lorraine, 54506, Vandoeuvre-lès-Nancy, France
| | - G Kervern
- Laboratoire de Cristallographie, Résonance Magnétique et Modélisations, CRM2, UMR 7036, Université de Lorraine, 54506, Vandoeuvre-lès-Nancy, France
| | - A En Naciri
- LCP-A2MC, UR 4632, Université de Lorraine, 57000, Metz, France
| | - L Broch
- LCP-A2MC, UR 4632, Université de Lorraine, 57000, Metz, France
| | - R Hajj Hussein
- LCP-A2MC, UR 4632, Université de Lorraine, 57000, Metz, France
| | - J-P Itié
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48, 91192, Gif-sur-Yvette Cedex, France
| | - L Nataf
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48, 91192, Gif-sur-Yvette Cedex, France
| | - S Ravy
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48, 91192, Gif-sur-Yvette Cedex, France
| | - P Franchetti
- LCP-A2MC, UR 4632, Université de Lorraine, 57000, Metz, France
| | - S Diliberto
- IJL, CNRS, Université de Lorraine, 57000, Metz, France
| | - S Michel
- IJL, CNRS, Université de Lorraine, 57000, Metz, France
| | - A Abouais
- Faculty of Physics, Astronomy and Informatics, Institute of Physics, Nicolaus Copernicus University in Toruń, Ul. Grudziądzka 5, 87-100, Toruń, Poland
- Engineering Science for Energy Lab, National School of Applied Sciences, Chouaib Doukkali University of El Jadida, El Jadida, Morocco
| | - K Strzałkowski
- Faculty of Physics, Astronomy and Informatics, Institute of Physics, Nicolaus Copernicus University in Toruń, Ul. Grudziądzka 5, 87-100, Toruń, Poland
| |
Collapse
|
2
|
Jacques V, Laulhé C, Gallo-Frantz A, Ghoneim D, Bellec E, Ravy S, Le Bolloc'h D. Spin- and charge-density wave coupling in chromium studied through the spin-flip transition: statics and ultrafast dynamics. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322091999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
|
3
|
Jarnac A, Jacques V, Cario L, Janod E, Johnson S, Ravy S, Laulhé C. Photoinduced charge-density wave phase in 1T-TaS 2: growth and coarsening mechanisms. Acta Cryst Sect A 2022. [DOI: 10.1107/s205327332209204x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
|
4
|
Shoker MB, Alhaddad T, Pagès O, Torres VJB, Postnikov AV, Polian A, Hajj Hussein R, Pradhan GK, Narayana C, Gardiennet C, Kervern G, Nataf L, Ravy S, Itié JP, Strzałkowski K, Marasek A, Firszt F. Exceptional phonon point versus free phonon coupling in Zn 1-xBe xTe under pressure: an experimental and ab initio Raman study. Sci Rep 2022; 12:753. [PMID: 35031647 PMCID: PMC8760325 DOI: 10.1038/s41598-022-04815-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 12/13/2021] [Indexed: 11/17/2022] Open
Abstract
Raman scattering and ab initio Raman/phonon calculations, supported by X-ray diffraction, are combined to study the vibrational properties of Zn1-xBexTe under pressure. The dependence of the Be-Te (distinct) and Zn-Te (compact) Raman doublets that distinguish between Be- and Zn-like environments is examined within the percolation model with special attention to x ~ (0,1). The Be-like environment hardens faster than the Zn-like one under pressure, resulting in the two sub-modes per doublet getting closer and mechanically coupled. When a bond is so dominant that it forms a matrix-like continuum, its two submodes freely couple on crossing at the resonance, with an effective transfer of oscillator strength. Post resonance the two submodes stabilize into an inverted doublet shifted in block under pressure. When a bond achieves lower content and merely self-connects via (finite/infinite) treelike chains, the coupling is undermined by overdamping of the in-chain stretching until a «phonon exceptional point» is reached at the resonance. Only the out-of-chain vibrations «survive» the resonance, the in-chain ones are «killed». This picture is not bond-related, and hence presumably generic to mixed crystals of the closing-type under pressure (dominant over the opening-type), indicating a key role of the mesostructure in the pressure dependence of phonons in mixed crystals.
Collapse
Affiliation(s)
- M B Shoker
- Université de Lorraine, LCP-A2MC, ER 4632, 57000, Metz, France
| | - T Alhaddad
- Université de Lorraine, LCP-A2MC, ER 4632, 57000, Metz, France
| | - O Pagès
- Université de Lorraine, LCP-A2MC, ER 4632, 57000, Metz, France.
| | - V J B Torres
- Departamento de Fisica and I3N, Universidade de Aveiro, 3810-193, Aveiro, Portugal
| | - A V Postnikov
- Université de Lorraine, LCP-A2MC, ER 4632, 57000, Metz, France
| | - A Polian
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université - UMR CNRS 7590, 75005, Paris, France
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48, 91192, Gif-sur-Yvette Cedex, France
| | - R Hajj Hussein
- Université de Lorraine, LCP-A2MC, ER 4632, 57000, Metz, France
| | - G K Pradhan
- Department of Physics, School of Applied Sciences, KIIT Deemed to be University, Bhubaneswar, Odisha, 751024, India
| | - C Narayana
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India
| | - C Gardiennet
- Laboratoire de Cristallographie, Résonance Magnétique et Modélisations, UMR 7036, Université de Lorraine, 54506, Vandoeuvre-lès-Nancy, France
| | - G Kervern
- Laboratoire de Cristallographie, Résonance Magnétique et Modélisations, UMR 7036, Université de Lorraine, 54506, Vandoeuvre-lès-Nancy, France
| | - L Nataf
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48, 91192, Gif-sur-Yvette Cedex, France
| | - S Ravy
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48, 91192, Gif-sur-Yvette Cedex, France
| | - J-P Itié
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48, 91192, Gif-sur-Yvette Cedex, France
| | - K Strzałkowski
- Faculty of Physics, Astronomy and Informatics, Institute of Physics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100, Toruń, Poland
| | - A Marasek
- Faculty of Physics, Astronomy and Informatics, Institute of Physics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100, Toruń, Poland
| | - F Firszt
- Faculty of Physics, Astronomy and Informatics, Institute of Physics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100, Toruń, Poland
| |
Collapse
|
5
|
Laulhé C, Huber T, Lantz G, Ferrer A, Mariager SO, Grübel S, Rittmann J, Johnson JA, Esposito V, Lübcke A, Huber L, Kubli M, Savoini M, Jacques VLR, Cario L, Corraze B, Janod E, Ingold G, Beaud P, Johnson SL, Ravy S. Ultrafast Formation of a Charge Density Wave State in 1T-TaS_{2}: Observation at Nanometer Scales Using Time-Resolved X-Ray Diffraction. Phys Rev Lett 2017; 118:247401. [PMID: 28665649 DOI: 10.1103/physrevlett.118.247401] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Indexed: 05/19/2023]
Abstract
Femtosecond time-resolved x-ray diffraction is used to study a photoinduced phase transition between two charge density wave (CDW) states in 1T-TaS_{2}, namely the nearly commensurate (NC) and the incommensurate (I) CDW states. Structural modulations associated with the NC-CDW order are found to disappear within 400 fs. The photoinduced I-CDW phase then develops through a nucleation and growth process which ends 100 ps after laser excitation. We demonstrate that the newly formed I-CDW phase is fragmented into several nanometric domains that are growing through a coarsening process. The coarsening dynamics is found to follow the universal Lifshitz-Allen-Cahn growth law, which describes the ordering kinetics in systems exhibiting a nonconservative order parameter.
Collapse
Affiliation(s)
- C Laulhé
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin-BP 48, F-91192 Gif-sur-Yvette, France
- Université Paris-Saclay (Université Paris-Sud), F-91405 Orsay Cedex, France
| | - T Huber
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| | - G Lantz
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
- Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, UMR 8502, F-91405 Orsay, France
| | - A Ferrer
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - S O Mariager
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - S Grübel
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - J Rittmann
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - J A Johnson
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - V Esposito
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - A Lübcke
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - L Huber
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| | - M Kubli
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| | - M Savoini
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| | - V L R Jacques
- Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, UMR 8502, F-91405 Orsay, France
| | - L Cario
- Institut des Matériaux Jean Rouxel-UMR 6502, Université de Nantes, 2 rue de la Houssinière, F-44322 Nantes, France
| | - B Corraze
- Institut des Matériaux Jean Rouxel-UMR 6502, Université de Nantes, 2 rue de la Houssinière, F-44322 Nantes, France
| | - E Janod
- Institut des Matériaux Jean Rouxel-UMR 6502, Université de Nantes, 2 rue de la Houssinière, F-44322 Nantes, France
| | - G Ingold
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - P Beaud
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - S L Johnson
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| | - S Ravy
- Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, UMR 8502, F-91405 Orsay, France
| |
Collapse
|
6
|
Jacques VLR, Laulhé C, Moisan N, Ravy S, Le Bolloc'h D. Laser-Induced Charge-Density-Wave Transient Depinning in Chromium. Phys Rev Lett 2016; 117:156401. [PMID: 27768359 DOI: 10.1103/physrevlett.117.156401] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Indexed: 05/22/2023]
Abstract
We report on time-resolved x-ray diffraction measurements following femtosecond laser excitation in pure bulk chromium. Comparing the evolution of incommensurate charge-density-wave (CDW) and atomic lattice reflections, we show that, a few nanoseconds after laser excitation, the CDW undergoes different structural changes than the atomic lattice. We give evidence for a transient CDW shear strain that breaks the lattice point symmetry. This strain is characteristic of sliding CDWs, as observed in other incommensurate CDW systems, suggesting the laser-induced CDW sliding capability in 3D systems. This first evidence opens perspectives for unconventional laser-assisted transport of correlated charges.
Collapse
Affiliation(s)
- V L R Jacques
- Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - C Laulhé
- Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
- Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - N Moisan
- Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - S Ravy
- Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - D Le Bolloc'h
- Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| |
Collapse
|
7
|
Hajj Hussein R, Pagès O, Polian A, Postnikov AV, Dicko H, Firszt F, Strzałkowski K, Paszkowicz W, Broch L, Ravy S, Fertey P. Pressure-induced phonon freezing in the ZnSeS II-VI mixed crystal: phonon-polaritons and ab initio calculations. J Phys Condens Matter 2016; 28:205401. [PMID: 27114448 DOI: 10.1088/0953-8984/28/20/205401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Near-forward Raman scattering combined with ab initio phonon and bond length calculations is used to study the 'phonon-polariton' transverse optical modes (with mixed electrical-mechanical character) of the II-VI ZnSe1-x S x mixed crystal under pressure. The goal of the study is to determine the pressure dependence of the poorly-resolved percolation-type Zn-S Raman doublet of the three oscillator [1 × (Zn-Se), 2 × (Zn-S)] ZnSe0.68S0.32 mixed crystal, which exhibits a phase transition at approximately the same pressure as its two end compounds (~14 GPa, zincblende → rocksalt), as determined by high-pressure x-ray diffraction. We find that the intensity of the lower Zn-S sub-mode of ZnSe0.68S0.32, due to Zn-S bonds vibrating in their own (S-like) environment, decreases under pressure (Raman scattering), whereas its frequency progressively converges onto that of the upper Zn-S sub-mode, due to Zn-S vibrations in the foreign (Se-like) environment (ab initio calculations). Ultimately, only the latter sub-mode survives. A similar 'phonon freezing' was earlier evidenced with the well-resolved percolation-type Be-Se doublet of Zn1-x Be x Se (Pradhan et al 2010 Phys. Rev. B 81 115207), that exhibits a large contrast in the pressure-induced structural transitions of its end compounds. We deduce that the above collapse/convergence process is intrinsic to the percolation doublet of a short bond under pressure, at least in a ZnSe-based mixed crystal, and not due to any pressure-induced structural transition.
Collapse
Affiliation(s)
- R Hajj Hussein
- LCP-A2MC, Institut Jean Barriol, Université de Lorraine, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Janolin PE, Anokhin AS, Gui Z, Mukhortov VM, Golovko YI, Guiblin N, Ravy S, El Marssi M, Yuzyuk YI, Bellaiche L, Dkhil B. Strain engineering of perovskite thin films using a single substrate. J Phys Condens Matter 2014; 26:292201. [PMID: 24961271 DOI: 10.1088/0953-8984/26/29/292201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Combining temperature-dependent x-ray diffraction, Raman spectroscopy and first-principles-based effective Hamiltonian calculations, we show that varying the thickness of (Ba0.8Sr0.2)TiO3 (BST) thin films deposited on the same single substrate (namely, MgO) enables us to change not only the magnitude but also the sign of the misfit strain. Such previously overlooked control of the strain allows several properties of these films (e.g. Curie temperature, symmetry of ferroelectric phases, dielectric response) to be tuned and even optimized. Surprisingly, such desired control of the strain (and of the resulting properties) originates from an effect that is commonly believed to be detrimental to functionalities of films, namely the existence of misfit dislocations. The present study therefore provides a novel route to strain engineering, as well as leading us to revisit common beliefs.
Collapse
Affiliation(s)
- P-E Janolin
- Laboratoire Structures, Propriétés et Modélisation des Solides, UMR CNRS-École Centrale Paris, Grande Voie des Vignes, 92295 Châtenay-Malabry Cedex, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Huber T, Mariager SO, Ferrer A, Schäfer H, Johnson JA, Grübel S, Lübcke A, Huber L, Kubacka T, Dornes C, Laulhe C, Ravy S, Ingold G, Beaud P, Demsar J, Johnson SL. Coherent structural dynamics of a prototypical charge-density-wave-to-metal transition. Phys Rev Lett 2014; 113:026401. [PMID: 25062214 DOI: 10.1103/physrevlett.113.026401] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Indexed: 05/19/2023]
Abstract
Using femtosecond time-resolved x-ray diffraction, we directly monitor the coherent lattice dynamics through an ultrafast charge-density-wave-to-metal transition in the prototypical Peierls system K(0.3)MoO(3) over a wide range of relevant excitation fluences. While in the low fluence regime we directly follow the structural dynamics associated with the collective amplitude mode; for fluences above the melting threshold of the electronic density modulation we observe a transient recovery of the periodic lattice distortion. We can describe these structural dynamics as a motion along the coordinate of the Peierls distortion triggered by the prompt collapse of electronic order after photoexcitation. The results indicate that the dynamics of a structural symmetry-breaking transition are determined by a high-symmetry excited state potential energy surface distinct from that of the initial low-temperature state.
Collapse
Affiliation(s)
- T Huber
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| | - S O Mariager
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - A Ferrer
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland and Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - H Schäfer
- Physics Department, Universität Konstanz, D-78457 Konstanz, Germany
| | - J A Johnson
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - S Grübel
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - A Lübcke
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland and Laboratoire de Spectroscopie Ultrarapide, EPF Lausanne, CH-1015 Lausanne, Switzerland
| | - L Huber
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| | - T Kubacka
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| | - C Dornes
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| | - C Laulhe
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192 Gif-sur-Yvette Cedex, France and Université Paris-Sud, 91405 Orsay Cedex, France
| | - S Ravy
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192 Gif-sur-Yvette Cedex, France
| | - G Ingold
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - P Beaud
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - J Demsar
- Physics Department, Universität Konstanz, D-78457 Konstanz, Germany and Institute of Physics, Ilmenau University of Technology, D-98693 Ilmenau, Germany
| | - S L Johnson
- Institute for Quantum Electronics, Physics Department, ETH Zurich, CH-8093 Zurich, Switzerland
| |
Collapse
|
10
|
Collet E, Watanabe H, Bréfuel N, Palatinus L, Roudaut L, Toupet L, Tanaka K, Tuchagues JP, Fertey P, Ravy S, Toudic B, Cailleau H. Aperiodic spin state ordering of bistable molecules and its photoinduced erasing. Phys Rev Lett 2012; 109:257206. [PMID: 23368495 DOI: 10.1103/physrevlett.109.257206] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Indexed: 06/01/2023]
Abstract
We describe a novel type of ordering phenomenon associated with the incommensurate occupational modulation of bistable molecular magnetic state in a spin-crossover material. This unusual type of aperiodicity resulting from the ordering of multistable electronic states opens new possibilities for addressing such materials by light. Here we show that light can switch the crystal from four- to three-dimensional periodic structure. Mixing aperiodicity, multistability, and photoinduced phenomenà opens new perspectives for directing complex order and function in material science.
Collapse
Affiliation(s)
- E Collet
- Institut de Physique de Rennes, Université de Rennes I-CNRS, UMR 6251, F-35042 Rennes, France
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Fertey P, Ravy S, Elkaim E, Laulhe C, Itié JP, Fourme R. High-pressure crystallography on the CRISTAL beamline at SOLEIL synchrotron. Acta Crystallogr A 2012. [DOI: 10.1107/s0108767312096481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
12
|
Lupi S, Baldassarre L, Mansart B, Perucchi A, Barinov A, Dudin P, Papalazarou E, Rodolakis F, Rueff JP, Itié JP, Ravy S, Nicoletti D, Postorino P, Hansmann P, Parragh N, Toschi A, Saha-Dasgupta T, Andersen OK, Sangiovanni G, Held K, Marsi M. Erratum: A microscopic view on the Mott transition in chromium-doped V2O3. Nat Commun 2012. [DOI: 10.1038/ncomms1397] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
|
13
|
Ravy S, Jacques V, Le Bolloc'h D, Pinsolle E, Sauvage-Simkin M, Livet F. Bulk dislocation core dissociation probed by coherent X rays in silicon. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311088842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
14
|
Jacques VLR, Ravy S, Le Bolloc'h D, Pinsolle E, Sauvage-Simkin M, Livet F. Bulk dislocation core dissociation probed by coherent x rays in silicon. Phys Rev Lett 2011; 106:065502. [PMID: 21405477 DOI: 10.1103/physrevlett.106.065502] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Indexed: 05/22/2023]
Abstract
We report on a new approach to probe bulk dislocations by using coherent x-ray diffraction. Coherent x rays are particularly suited for bulk dislocation studies because lattice phase shifts in condensed matter induce typical diffraction patterns which strongly depend on the fine structure of the dislocation cores. The strength of the method is demonstrated by performing coherent diffraction of a single dislocation loop in silicon. A dissociation of a bulk dislocation is measured and proves to be unusually large compared to surface dislocation dissociations. This work opens a route for the study of dislocation cores in the bulk in a static or dynamical regime, and under various external constraints.
Collapse
Affiliation(s)
- V L R Jacques
- Laboratoire de Physique des Solides, CNRS-UMR 8502, Bât 510, Université Paris-sud, 91405 Orsay cedex, France.
| | | | | | | | | | | |
Collapse
|
15
|
Lupi S, Baldassarre L, Mansart B, Perucchi A, Barinov A, Dudin P, Papalazarou E, Rodolakis F, Rueff JP, Itié JP, Ravy S, Nicoletti D, Postorino P, Hansmann P, Parragh N, Toschi A, Saha-Dasgupta T, Andersen OK, Sangiovanni G, Held K, Marsi M. A microscopic view on the Mott transition in chromium-doped V2O3. Nat Commun 2010; 1:105. [DOI: 10.1038/ncomms1109] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Accepted: 10/07/2010] [Indexed: 11/09/2022] Open
|
16
|
Ravy S, Le Bolloc'h D, Jacques V, Kirova N, Dumas J, Marcus J, Livet F. Observation of micrometric correlations in sliding incommensurate charge-density waves. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308084833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
17
|
Itie JP, Polian A, Ravy S, Flank AM, Lagarde P, Hanfland M, Jaouen N, Dhaussy AC. Local aspects of high-pressure phase transitions in ferroelectrics. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308096724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
18
|
Le Bolloc'h D, Jacques VLR, Kirova N, Dumas J, Ravy S, Marcus J, Livet F. Observation of correlations up to the micrometer scale in sliding charge-density waves. Phys Rev Lett 2008; 100:096403. [PMID: 18352733 DOI: 10.1103/physrevlett.100.096403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2007] [Indexed: 05/26/2023]
Abstract
A high resolution coherent x-ray diffraction experiment has been performed on the charge-density wave (CDW) system K0.3MoO3. The 2kF satellite reflection associated with the CDW has been measured with respect to external dc currents. In the sliding regime, the 2kF satellite reflection displays secondary satellites along the chain axis which corresponds to correlations up to the micrometer scale. This super long-range order is 1500 times larger than the CDW period itself. This new type of electronic correlation seems inherent to the collective dynamics of electrons in charge-density wave systems. Several scenarios are discussed.
Collapse
Affiliation(s)
- D Le Bolloc'h
- Laboratoire de Physique des Solides (CNRS-UMR 8502), Bâtiment 510, Université Paris-sud, 91405 Orsay cedex, France
| | | | | | | | | | | | | |
Collapse
|
19
|
Elkaïm E, Legrand F, Guillet G, Mezière H, Ravy S. The powder diffractometer of beamline CRISTAL at synchrotron SOLEIL. Acta Crystallogr A 2007. [DOI: 10.1107/s0108767307093543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
20
|
Ravy S. Diffraction at SOLEIL. Acta Crystallogr A 2007. [DOI: 10.1107/s0108767307098200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
21
|
Ravy S, Le Bolloc'h D, Currat R, Fluerasu A, Mocuta C, Dkhil B. SrTiO3 displacive transition revisited via coherent X-ray diffraction. Phys Rev Lett 2007; 98:105501. [PMID: 17358544 DOI: 10.1103/physrevlett.98.105501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2006] [Indexed: 05/14/2023]
Abstract
We present a coherent x-ray diffraction study of the antiferrodistortive displacive transition of SrTiO3, a prototypical example of a phase transition for which the critical fluctuations exhibit two length scales and two time scales. From the microbeam x-ray coherent diffraction patterns, we show that the broad (short-length scale) and the narrow (long-length scale) components can be spatially disentangled, due to 100-microm-scale spatial variations of the latter. Moreover, both components exhibit a speckle pattern, which is static on a approximately 10 mn time scale. This gives evidence that the narrow component corresponds to static ordered domains. We interpret the speckles in the broad component as due to a very slow dynamical process, corresponding to the well-known central peak seen in inelastic neutron scattering.
Collapse
Affiliation(s)
- S Ravy
- Synchrotron SOLEIL, L'Orme des merisiers, Saint-Aubin BP 48, 91192 Gif-sur-Yvette cedex, France
| | | | | | | | | | | |
Collapse
|
22
|
Gama V, Henriques RT, Bonfait G, Almeida M, Ravy S, Pouget JP, Alcácer L. The Interplay Between Conduction Electrons and Chains of Localised Spins in The Molecular Metals (Per)2M(mnt)2, M=Au, Pt, Pd, Ni, Cu, Co and Fe. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259308042912] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- V. Gama
- a Dept. Química , ICEN-LNETI , P-2686 , SACAVÉM Codex , Portugal
| | - R. T. Henriques
- a Dept. Química , ICEN-LNETI , P-2686 , SACAVÉM Codex , Portugal
| | - G. Bonfait
- a Dept. Química , ICEN-LNETI , P-2686 , SACAVÉM Codex , Portugal
| | - M. Almeida
- a Dept. Química , ICEN-LNETI , P-2686 , SACAVÉM Codex , Portugal
| | - S. Ravy
- b Lab. Physique des Solides , Univ. Paris Sud , F-91405 , Orsay Cedex , France
| | - J. P. Pouget
- b Lab. Physique des Solides , Univ. Paris Sud , F-91405 , Orsay Cedex , France
| | - L. Alcácer
- c Dept. Química , Institute Superior Técnico , P-1096 , LISBOA Codex , Portugal
| |
Collapse
|
23
|
Buron-Le Cointe M, Lemée-Cailleau MH, Cailleau H, Ravy S, Bérar JF, Rouzière S, Elkaïm E, Collet E. One-dimensional fluctuating nanodomains in the charge-transfer molecular system TTF-CA and their first-order crystallization. Phys Rev Lett 2006; 96:205503. [PMID: 16803183 DOI: 10.1103/physrevlett.96.205503] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2005] [Indexed: 05/10/2023]
Abstract
We report on the direct observation by x-ray diffuse scattering measurements of thermally induced one-dimensional nanoscale ordered fluctuations in the mixed-stack charge-transfer molecular system tetrathiafulvalene-p chloranil (TTF-CA), the prototype for the neutral-ionic phase transition. The unusual physical properties of this compound are considered to be driven by such one-dimensional excitations. The results are discussed in relation to previous experimental and theoretical experiments both at thermal equilibrium and under light irradiation.
Collapse
Affiliation(s)
- M Buron-Le Cointe
- Groupe Matière Condensée et Matériaux, UMR 6626 CNRS-Université Rennes 1, 35042 Rennes, France
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Le Bolloc'h D, Ravy S, Dumas J, Marcus J, Livet F, Detlefs C, Yakhou F, Paolasini L. Charge density wave dislocation as revealed by coherent x-ray diffraction. Phys Rev Lett 2005; 95:116401. [PMID: 16197025 DOI: 10.1103/physrevlett.95.116401] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2005] [Indexed: 05/04/2023]
Abstract
Coherent x-ray diffraction experiments have been performed on high quality crystals of the charge density wave (CDW) system K0.3MoO3. The satellite reflections associated with the CDW have been measured as a function of the 20-microm-diameter beam position. For some positions, regular fringes have been observed. We show that this observation is consistent with the presence of a single CDW dislocation. Beyond charge density wave systems, this experiment shows that coherent x-ray diffraction is a suitable tool to probe topological defects embedded in the bulk.
Collapse
Affiliation(s)
- D Le Bolloc'h
- Laboratoire de Physique des Solides, CNRS-UMR 8502, Bâtiment 510, Université Paris-sud, 91405 Orsay cedex, France
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Ravy S, Le Bolloc'h D, Currat R. Displacive transition revisited by coherent X-ray diffraction. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305086101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
26
|
Fagot S, Foury P, Pouget JP, Ravy S, Elkaim E, Popov G, Lobanov MV, Greenblatt M, Anne M. Structural aspects of the metal–insulator transition in BaVS 3. Acta Crystallogr A 2004. [DOI: 10.1107/s0108767304095601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
27
|
Ravy S, Foury-Leylekian P, Le Bolloc'h D, Pouget JP, Fabre JM, Prado RJ, Lagarde P. Structural instability and electronic localization in the 2:1 salts: The case of the Fabre and the (DMtTTF)2CIO4salts. ACTA ACUST UNITED AC 2004. [DOI: 10.1051/jp4:2004114015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
28
|
Ravy S, Pouget JP, Rouziere S, Brazovskii S. Asymmetry effects in diffraction by disordered charge-density wave systems. Acta Crystallogr A 2002. [DOI: 10.1107/s010876730209147x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
29
|
Whangbo MH, Ren J, Liang W, Canadell E, Pouget JP, Ravy S, Williams JM, Beno MA. Some general conditions for hidden Fermi surface nesting. Inorg Chem 2002. [DOI: 10.1021/ic00046a034] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
30
|
Michel P, Moradpour A, Penven P, Firlej L, Bernier P, Levy B, Ravy S, Zahab A. Ring-strain-modified properties of substituted perylene radical cation salts. A solid-state carbon-13 CPMAS NMR study. J Am Chem Soc 2002. [DOI: 10.1021/ja00179a011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
31
|
Sandre E, Foury-Leylekian P, Ravy S, Pouget JP. Ab initio fermi surface calculation for charge-density wave instability in transition metal oxide bronzes. Phys Rev Lett 2001; 86:5100-5103. [PMID: 11384431 DOI: 10.1103/physrevlett.86.5100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2000] [Indexed: 05/23/2023]
Abstract
The electronic structure of the charge density wave (CDW) bronze (PO2)(4)(WO3)(2m), m = 4, is determined using ab initio density functional theory. The calculation shows that the Fermi surface (FS) consists in the superposition of three one-dimensional FS's associated with three types of chains. The q dependence of the electronic response function calculated from the electronic structure quantitatively accounts for the anisotropy of the fluctuations probed by x-ray diffuse scattering. The results validate the hidden nesting mechanism proposed for the CDW transitions in this series of bronzes.
Collapse
Affiliation(s)
- E Sandre
- Laboratoire de Physique des Solides (UMR 8502), Université Paris-Sud, Bâtiment 510, 91405 Orsay CEDEX, France
| | | | | | | |
Collapse
|
32
|
Ravy S, Launois P, Moret R. Erratum: Analysis of the x-ray diffuse scattering in C60 from microscopic models. Phys Rev B Condens Matter 1996; 54:17224-17225. [PMID: 9986987 DOI: 10.1103/physrevb.54.17224.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
33
|
|
34
|
Moret R, Launois P, Ravy S. X-ray diffuse scattering and intermolecular interactions in solid C 60. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396083365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
35
|
Ravy S, Launois P, Moret R. Analysis of the x-ray diffuse scattering in C60 from microscopic models. Phys Rev B Condens Matter 1996; 53:R10532-R10535. [PMID: 9982724 DOI: 10.1103/physrevb.53.r10532] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
36
|
Dumoulin B, Bourbonnais C, Ravy S, Pouget JP, Coulon C. Fluctuation effects in low-dimensional spin-Peierls systems: Theory and experiment. Phys Rev Lett 1996; 76:1360-1363. [PMID: 10061701 DOI: 10.1103/physrevlett.76.1360] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
37
|
Launois P, Ravy S, Moret R. Diffuse scattering and orientational correlations in solid C60. Phys Rev B Condens Matter 1995; 52:5414-5425. [PMID: 9981733 DOI: 10.1103/physrevb.52.5414] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
38
|
Ilakovac V, Ravy S, Moradpour A, Firlej L, Bernier P. Disorder and electronic properties of substituted perylene radical-cation salts. Phys Rev B Condens Matter 1995; 52:4108-4122. [PMID: 9981537 DOI: 10.1103/physrevb.52.4108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
39
|
Ilakovac V, Ravy S, Pouget JP, Lenoir C, Boubekeur K, Batail P, Babic SD, Biskup N, Korin-Hamzic B, Tomic S, Bourbonnais C. Enhanced charge localization in the organic alloys. Phys Rev B Condens Matter 1994; 50:7136-7139. [PMID: 9974671 DOI: 10.1103/physrevb.50.7136] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
40
|
Garel T, Ilakovac V, Ravy S. Scattering properties of the triangular Ising antiferromagnet: Disorder and Lifshitz lines. Phys Rev B Condens Matter 1994; 49:12791-12796. [PMID: 10010183 DOI: 10.1103/physrevb.49.12791] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
41
|
|
42
|
Canadell E, Rachidi II, Ravy S, Pouget J, Brossard L, Legros J. On the band electronic structure of X [M (dmit)2]2 (X = TTF, (CH3)4N ; M = Ni, Pd) molecular conductors and superconductors. ACTA ACUST UNITED AC 1989. [DOI: 10.1051/jphys:0198900500190296700] [Citation(s) in RCA: 132] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
|
43
|
|
44
|
Ravy S, Pouget JP, Moret R, Lenoir C. X-ray study of the incommensurate modulation of the organic superconductor beta -di. Phys Rev B Condens Matter 1988; 37:5113-5121. [PMID: 9943687 DOI: 10.1103/physrevb.37.5113] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
45
|
Moret R, Ravy S, Pouget JP. Structural phase transitions in organic superconductors. Acta Crystallogr A 1987. [DOI: 10.1107/s0108767387082473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
46
|
Moret R, Ravy S, Pouget JP, Comes R, Bechgaard K. Anion-ordering phase diagram of di(tetramethyltetraselena- fulvalenium) perrhenate (TMTSF)2ReO4. Phys Rev Lett 1986; 57:1915-1918. [PMID: 10033582 DOI: 10.1103/physrevlett.57.1915] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
47
|
Ravy S, Moret R, Pouget JP, Comes R, Parkin SS. Competition between organic superconductivity and a displacive structural modulation in the molecular stacks in bis(ethylenedithio) tetrathiafulvalene perrhenate, (BEDT-TTF)2ReO4. Phys Rev B Condens Matter 1986; 33:2049-2051. [PMID: 9938529 DOI: 10.1103/physrevb.33.2049] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|