1
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Abstract
We report on infrared spectroscopy experiments on the electronic response in (Sr1-x La x )2IrO4 (x = 0, 0.021, and 0.067). Our data show that electron doping induced by La substitution leads to an insulator-to-metal transition. The evolution of the electronic structure across the transition reveals the robustness of the strong electronic correlations against the electron doping. The conductivity data of the metallic compound show the signature of the pseudogap that bears close similarity to the analogous studies of the pseudogap in the underdoped cuprates. While the low energy conductivity of the metallic compound is barely frequency dependent, the formation of the pseudogap is revealed by the gradual suppression of the featureless conductivity below a threshold frequency of about 17 meV. The threshold structure develops below about 100 K which is in the vicinity of the onset of the short-range antiferromagnetic order. Our results demonstrate that the electronic correlations play a crucial role in the anomalous charge dynamics in the (Sr1-x La x )2IrO4 system.
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Le Dréau L, Prestipino C, Hernandez O, Schefer J, Vaughan G, Paofai S, Perez-Mato JM, Hosoya S, Paulus W. Structural Modulation and Phase Transitions in La2CoO4.14 Investigated by Synchrotron X-ray and Neutron Single-Crystal Diffraction. Inorg Chem 2012; 51:9789-98. [DOI: 10.1021/ic301165a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Loïc Le Dréau
- Institut des
Sciences Chimiques
de Rennes, Université de Rennes 1, UMR CNRS-UR1 6226, Campus de Beaulieu, Bât 10B, 35042 Rennes
Cedex, France
- Laboratory
for Neutron Scattering, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Carmelo Prestipino
- Institut des
Sciences Chimiques
de Rennes, Université de Rennes 1, UMR CNRS-UR1 6226, Campus de Beaulieu, Bât 10B, 35042 Rennes
Cedex, France
| | - Olivier Hernandez
- Institut des
Sciences Chimiques
de Rennes, Université de Rennes 1, UMR CNRS-UR1 6226, Campus de Beaulieu, Bât 10B, 35042 Rennes
Cedex, France
| | - Jürg Schefer
- Laboratory
for Neutron Scattering, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Gavin Vaughan
- European Synchrotron Radiation Facility, ID11, Grenoble, France
| | - Serge Paofai
- Institut des
Sciences Chimiques
de Rennes, Université de Rennes 1, UMR CNRS-UR1 6226, Campus de Beaulieu, Bât 10B, 35042 Rennes
Cedex, France
| | - Juan Manuel Perez-Mato
- Departamento de Fisica de la
Materia Condensada, Facultad de Ciencias, Universidad del Pais Vasco, UPV/EHU Apdo. 664, E-48080 Bilbao, Spain
| | - Shoichi Hosoya
- Institute of Inorganic Synthesis,
Faculty of Engineering, Yamanashi University, Miyamae-cho 7, Kofu 400, Japan
| | - Werner Paulus
- Institut Charles Gerhardt, Université de Montpellier, UMR 5253 CNRS-ENSCM-UM2-UM1,
8 rue de l’Ecole Normale, 34296 Montpellier, France
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3
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On the role of lattice dynamics on low-temperature oxygen mobility in solid oxides: a neutron diffraction and first-principles investigation of $$ {\hbox{L}}{{\hbox{a}}_2}{\hbox{Cu}}{{\hbox{O}}_{{4 + \delta }}} $$. J Solid State Electrochem 2010. [DOI: 10.1007/s10008-010-1274-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Paulus W, Schober H, Eibl S, Johnson M, Berthier T, Hernandez O, Ceretti M, Plazanet M, Conder K, Lamberti C. Lattice dynamics to trigger low temperature oxygen mobility in solid oxide ion conductors. J Am Chem Soc 2009; 130:16080-5. [PMID: 18986139 DOI: 10.1021/ja806144a] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
SrFeO(2.5) and SrCoO(2.5) are able to intercalate oxygen in a reversible topotactic redox reaction already at room temperature to form the cubic perovskites Sr(Fe,Co)O(3), while CaFeO(2.5) can only be oxidized under extreme conditions. To explain this significant difference in low temperature oxygen mobility, we investigated the homologous SrFeO(2.5) and CaFeO(2.5) by temperature dependent oxygen isotope exchange as well as by inelastic neutron scattering (INS) studies, combined with ab initio (DFT) molecular dynamical calculations. From (18)O/(16)O isotope exchange experiments we proved free oxygen mobility to be realized in SrFeO(x) already below 600 K. We have also evidence that low temperature oxygen mobility relies on the existence of specific, low energy lattice modes, which trigger and amplify oxygen mobility in solids. We interpret the INS data together with the DFT-based molecular dynamical simulation results on SrFeO(2.5) and CaFeO(2.5) in terms of an enhanced, phonon-assisted, low temperature oxygen diffusion for SrFeO(3-x) as a result of the strongly reduced Fe-O-Fe bond strength of the apical oxygen atoms in the FeO(6) octahedra along the stacking axis. This dynamically triggered phenomenon leads to an easy migration of the oxide ions into the open vacancy channels and vice versa. The decisive impact of lattice dynamics, giving rise to structural instabilities in oxygen deficient perovskites, especially with brownmillerite-type structure, is demonstrated, opening new concepts for the design and tailoring of low temperature oxygen ion conductors.
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Affiliation(s)
- Werner Paulus
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
| | - Helmut Schober
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
| | - Stefan Eibl
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
| | - Mark Johnson
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
| | - Tanguy Berthier
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
| | - Olivier Hernandez
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
| | - Monica Ceretti
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
| | - Marie Plazanet
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
| | - Kazimierz Conder
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
| | - Carlo Lamberti
- Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes1, Inorganic Materials: Soft Chemistry and Reactivity of Solids, Campus de Beaulieu, F-35042 Rennes, France, Institut Laue-Langevin, BP 156 X, F-38042 Grenoble Cedex, France, Department of Inorganic, Physical and Materials Chemistry and NIS Center of Excellence, and INSTM “Centro di Riferimento”, University of Turin, Italy, European Laboratory for Non-Linear Spectroscopy, University of Florence, Polo Scientifico, I-50019 Sesto-Fiorentin,
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5
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Uchiyama H, Baron AQR, Tsutsui S, Tanaka Y, Hu WZ, Yamamoto A, Tajima S, Endoh Y. Softening of Cu-O bond stretching phonons in tetragonal HgBa2CuO4+delta. PHYSICAL REVIEW LETTERS 2004; 92:197005. [PMID: 15169440 DOI: 10.1103/physrevlett.92.197005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2003] [Indexed: 05/24/2023]
Abstract
Phonons in nearly optimally doped HgBa(2)CuO(4+delta) were studied by inelastic x-ray scattering. The dispersion of the low-energy modes is well described by a shell model, while the Cu-O bond stretching mode at high energy shows strong softening towards the zone boundary, which deviates strongly from the model. This seems to be common in the hole-doped high-T(c) superconducting cuprates, and, based on this work, not related to a lattice distortion specific to each material.
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Affiliation(s)
- H Uchiyama
- Superconductivity Research Laboratory, International Superconductivity Technology Center, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan
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6
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Rösch O, Gunnarsson O. Electron-phonon interaction in the t-J model. PHYSICAL REVIEW LETTERS 2004; 92:146403. [PMID: 15089562 DOI: 10.1103/physrevlett.92.146403] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2003] [Indexed: 05/24/2023]
Abstract
We derive a t-J model with electron-phonon coupling from the three-band model, considering modulation of both hopping and Coulomb integrals by phonons. While the modulation of the hopping integrals dominates, the modulation of the Coulomb integrals cannot be neglected. The model explains the experimentally observed anomalous softening of the half-breathing mode upon doping and a weaker softening of the breathing mode. It is shown that other phonons are not strongly influenced, and, in particular, the coupling to a buckling mode is not strong in this model.
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Affiliation(s)
- O Rösch
- Max-Planck-Institut für Festkörperforschung, D-70506 Stuttgart, Germany
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7
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Wang NL, Timusk T, Franck JP, Schweiss P, Braden M, Erb A. Oxygen isotope effect in the ab-plane reflectance of underdoped YBa(2)Cu(3)O(7-delta). PHYSICAL REVIEW LETTERS 2002; 89:087003. [PMID: 12190494 DOI: 10.1103/physrevlett.89.087003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2001] [Indexed: 05/23/2023]
Abstract
We have measured the effect of oxygen isotope substitution on the ab-plane reflectance of underdoped YBa(2)Cu(3)O(7-delta). The frequency shift of the transverse optic phonons due to the substitution of 16O by 18O yields an isotope effect of the expected magnitude for copper-oxygen stretching modes with alpha=0.5+/-0.1. The reflectance shoulder at 400-500 cm(-1) shows a much smaller exponent of alpha=0.1+/-0.1 in the normal state and alpha=0.23+/-0.1 in the superconducting state. These observations suggest that the shoulder is of electronic origin and not due to a phonon mode as has been suggested recently.
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Affiliation(s)
- N L Wang
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1
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8
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Tranquada JM, Nakajima K, Braden M, Pintschovius L, McQueeney RJ. Bond-stretching-phonon anomalies in stripe-ordered La1.69Sr0.31NiO4. PHYSICAL REVIEW LETTERS 2002; 88:075505. [PMID: 11863910 DOI: 10.1103/physrevlett.88.075505] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2001] [Indexed: 05/23/2023]
Abstract
We report a neutron scattering study of bond-stretching phonons in La1.69Sr0.31NiO4, a doped antiferromagnet in which the added holes order in diagonal stripes at 45 to the Ni-O bonds. For the highest-energy longitudinal optical mode along the bonds, a softening of 20% is observed between the Brillouin zone center and the zone boundary. At 45 to the bonds, a splitting of the same magnitude is found across much of the zone. Surprisingly, the charge-ordering wave vector plays no apparent role in the anomalous dispersions. The implications for related anomalies in the cuprates are discussed.
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Affiliation(s)
- J M Tranquada
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
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9
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Pashkevich YG, Blinkin VA, Gnezdilov VP, Tsapenko VV, Eremenko VV, Lemmens P, Fischer M, Grove M, Guntherodt G, Degiorgi L, Wachter P, Tranquada JM, Buttrey DJ. Stripe conductivity in La1.775Sr0.225NiO4. PHYSICAL REVIEW LETTERS 2000; 84:3919-3922. [PMID: 11019239 DOI: 10.1103/physrevlett.84.3919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/1999] [Indexed: 05/23/2023]
Abstract
We report Raman light-scattering and optical conductivity measurements on a single crystal of La1.775Sr0.225NiO4 which exhibits incommensurate charge-stripe order. The extra phonon peaks induced by stripe order can be understood in terms of the energies of phonons that occur at the charge-order wave vector Q(c). A strong Fano antiresonance for a Ni-O bond-stretching mode provides clear evidence for finite dynamical conductivity within the charge stripes.
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Affiliation(s)
- YG Pashkevich
- A. A. Galkin Donetsk Phystech NASU, 83114 Donetsk, Ukraine
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10
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Nikiforov AE, Shashkin SY, Zaharov AY. Calculation of Structural Parameters and Lattice Dynamics for the Jahn-Teller Oxide La2CuO4*. Z PHYS CHEM 1997. [DOI: 10.1524/zpch.1997.201.part_1_2.323] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Calvani P, Paolone A, Dore P, Lupi S, Maselli P, Medaglia PG, Cheong SW. Infrared response of ordered polarons in layered perovskites. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R9592-R9595. [PMID: 9984768 DOI: 10.1103/physrevb.54.r9592] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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12
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Sahiner A, Croft M, Zhang Z, Greenblatt M, Perez I, Metcalf P, Jhans H, Liang G, Jeon Y. Electronic structure anisotropy and d-configuration in Ni-based materials. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:9745-9752. [PMID: 9982532 DOI: 10.1103/physrevb.53.9745] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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13
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Nikiforov AE, Shashkin SY, Zaharov AY. Calculation of Structural Parameters and Lattice Dynamics for the Jahn-Teller Oxide La 2CuO 4*. Z PHYS CHEM 1996. [DOI: 10.1524/zpch.1996.1.1.597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Perkins JD, Kleinberg DS, Kastner MA, Birgeneau RJ, Endoh Y, Yamada K, Hosoya S. Infrared optical excitations in La2NiO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:R9863-R9866. [PMID: 9980133 DOI: 10.1103/physrevb.52.r9863] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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15
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Fehske H, Röder H, Wellein G, Mistriotis A. Hole-polaron formation in the two-dimensional Holstein t-J model: A variational Lanczos study. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:16582-16593. [PMID: 9978660 DOI: 10.1103/physrevb.51.16582] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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16
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Isaacs ED, Aeppli G, Zschack P, Cheong SW, Williams H, Buttrey DJ. Diffuse x-ray scattering from La2-xSrxNiO4 and La2-ySryCuO4. PHYSICAL REVIEW LETTERS 1994; 72:3421-3424. [PMID: 10056194 DOI: 10.1103/physrevlett.72.3421] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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17
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Bi XX, Eklund PC, Honig JM. Doping dependence of the a-b-plane optical conductivity of single-crystal La2-xSrxNiO4+ delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:3470-3478. [PMID: 10008777 DOI: 10.1103/physrevb.48.3470] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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18
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Udagawa M, Yamaguchi T, Nagaoka Y, Ogita N, Kato M, Maeno Y, Fujita T, Ohbayashi K. Phonon Raman scattering of (La1-xSrx)2NiO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:11391-11397. [PMID: 10005277 DOI: 10.1103/physrevb.47.11391] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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19
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Bi XX, Eklund PC. Polaron contribution to the infrared optical response of La2-xSrxCuO4+ delta and La2-xSrxNiO4+ delta. PHYSICAL REVIEW LETTERS 1993; 70:2625-2628. [PMID: 10053610 DOI: 10.1103/physrevlett.70.2625] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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20
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Licheron M, Gervais F. Ba2-xKxPb1-yBiyO4- delta : Layered oxides with insulating or conducting properties and possible superconducting properties. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:8008-8015. [PMID: 10004810 DOI: 10.1103/physrevb.47.8008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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21
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Tranquada JM, Buttrey DJ, Rice DE. Phase separation, charge-density waves, and magnetism in La2NiO4+ delta with delta =0.105. PHYSICAL REVIEW LETTERS 1993; 70:445-448. [PMID: 10054114 DOI: 10.1103/physrevlett.70.445] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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22
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23
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Renormalization of phonon frequencies by conduction electrons in layer systems with application to YBa2Cu3O7. ACTA ACUST UNITED AC 1992. [DOI: 10.1007/bf01320928] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Martínez JL, Odier P. Dynamical study of the structural and magnetic phases in Pr2NiO4 single crystals by Raman spectroscopy. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:12821-12829. [PMID: 10001342 DOI: 10.1103/physrevb.45.12821] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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25
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Klemm RA, Liu SH. Intralayer-versus-interlayer pairing in the copper oxide superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:7526-7545. [PMID: 9998669 DOI: 10.1103/physrevb.44.7526] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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26
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Crespi VH, Cohen ML. Anharmonic phonons and the anomalous isotope effect in La2-xSrxCuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:4712-4715. [PMID: 10000139 DOI: 10.1103/physrevb.44.4712] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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27
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Martnez JL, Fernández-Daz MT, Rodrguez-Carvajal J, Odier P. Lattice instability and low-temperature phase transition in Pr2NiO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:13766-13769. [PMID: 9997243 DOI: 10.1103/physrevb.43.13766] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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28
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Brill TM, Hampel G, Mertens F, Schürmann R, Assmus W, Lüthi B. Magnetic and elastic properties of La2NiO4+x. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:10548-10554. [PMID: 9996781 DOI: 10.1103/physrevb.43.10548] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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29
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Tajima S, Ido T, Ishibashi S, Itoh T, Eisaki H, Mizuo Y, Arima T, Takagi H, Uchida S. Optical-phonon study of single crystals of various layered cuprates and related materials: Evidence of unique electron-phonon coupling in the CuO2 plane. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:10496-10507. [PMID: 9996775 DOI: 10.1103/physrevb.43.10496] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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30
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Herr SL, Kamarás K, Tanner DB, Cheong SW, Stewart GR, Fisk Z. Infrared properties of T'-phase R2CuO4 insulating compounds. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:7847-7851. [PMID: 9996404 DOI: 10.1103/physrevb.43.7847] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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31
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Lynn JW, Sumarlin IW, Neumann DA, Rush JJ, Peng JL, Li ZY. Phonon density of states and superconductivity in Nd1.85Ce0.15CuO4. PHYSICAL REVIEW LETTERS 1991; 66:919-922. [PMID: 10043940 DOI: 10.1103/physrevlett.66.919] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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32
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Allen PB. Model for an extra phonon mode in La2CuO4 and La2NiO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:2766-2770. [PMID: 9997573 DOI: 10.1103/physrevb.43.2766] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Lander GH, Brown PJ, Stassis C, Gopalan P, Spalek J, Honig G. Magnetic and structural study of La1.8Sr0.2NiO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:448-456. [PMID: 9996231 DOI: 10.1103/physrevb.43.448] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Dembinski K, Gervais M, Odier P, Coutures J. A non polluting single crystal growth process for YBaCuO and phase diagram studies. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0022-5088(90)90212-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Entel P, Zielinski J. Many-body derivation of quasiparticle bands and effective interactions of fermions in CuO2 layers. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:307-324. [PMID: 9994541 DOI: 10.1103/physrevb.42.307] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Mostoller M, Zhang J, Rao AM, Eklund PC. Lattice vibrations in La2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 41:6488-6499. [PMID: 9992895 DOI: 10.1103/physrevb.41.6488] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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