1
|
Katukuri VM, Babkevich P, Mustonen O, Walker HC, Fåk B, Vasala S, Karppinen M, Rønnow HM, Yazyev OV. Exchange Interactions Mediated by Nonmagnetic Cations in Double Perovskites. PHYSICAL REVIEW LETTERS 2020; 124:077202. [PMID: 32142335 DOI: 10.1103/physrevlett.124.077202] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 10/21/2019] [Accepted: 01/28/2020] [Indexed: 06/10/2023]
Abstract
Establishing the physical mechanism governing exchange interactions is fundamental for exploring exotic phases such as quantum spin liquids in real materials. In this Letter, we address exchange interactions in Sr_{2}CuTe_{x}W_{1-x}O_{6}, a series of double perovskites that realize a spin-1/2 square lattice and are suggested to harbor a quantum spin liquid ground state arising from the random distribution of nonmagnetic ions. Our ab initio multireference configuration interaction calculations show that replacing Te atoms with W atoms changes the dominant couplings from nearest to next-nearest neighbor due to the crucial role of unoccupied states of the nonmagnetic ions in the super-superexchange mechanism. Combined with spin-wave theory simulations, our calculated exchange couplings provide an excellent description of the inelastic neutron scattering spectra of the parent compounds, as well as explaining that the magnetic excitations in Sr_{2}CuTe_{0.5}W_{0.5}O_{6} emerge from bond-disordered exchange couplings. Our results demonstrate the crucial role of the nonmagnetic cations in exchange interactions paving the way to further explore quantum spin liquid phases in bond-disordered materials.
Collapse
Affiliation(s)
- Vamshi M Katukuri
- Chair of Computational Condensed Matter Physics, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - P Babkevich
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - O Mustonen
- Department of Chemistry and Materials Science, Aalto University, FI-00076 Espoo, Finland
- Department of Material Science and Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, United Kingdom
| | - H C Walker
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 OQX, United Kingdom
| | - B Fåk
- Institut Laue-Langevin, CS 20156, F-38042 Grenoble Cedex 9, France
| | - S Vasala
- Institut für Materialwissenschaft, Fachgebiet Materialdesign durch Synthese, Technische Universitüt Darmstadt, Alarich-Weiss-Straße 2, 64287 Darmstadt, Germany
| | - M Karppinen
- Department of Chemistry and Materials Science, Aalto University, FI-00076 Espoo, Finland
| | - H M Rønnow
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - O V Yazyev
- Chair of Computational Condensed Matter Physics, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| |
Collapse
|
2
|
Babkevich P, Katukuri VM, Fåk B, Rols S, Fennell T, Pajić D, Tanaka H, Pardini T, Singh RRP, Mitrushchenkov A, Yazyev OV, Rønnow HM. Magnetic Excitations and Electronic Interactions in Sr_{2}CuTeO_{6}: A Spin-1/2 Square Lattice Heisenberg Antiferromagnet. PHYSICAL REVIEW LETTERS 2016; 117:237203. [PMID: 27982654 DOI: 10.1103/physrevlett.117.237203] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Indexed: 06/06/2023]
Abstract
Sr_{2}CuTeO_{6} presents an opportunity for exploring low-dimensional magnetism on a square lattice of S=1/2 Cu^{2+} ions. We employ ab initio multireference configuration interaction calculations to unravel the Cu^{2+} electronic structure and to evaluate exchange interactions in Sr_{2}CuTeO_{6}. The latter results are validated by inelastic neutron scattering using linear spin-wave theory and series-expansion corrections for quantum effects to extract true coupling parameters. Using this methodology, which is quite general, we demonstrate that Sr_{2}CuTeO_{6} is an almost ideal realization of a nearest-neighbor Heisenberg antiferromagnet but with relatively weak coupling of 7.18(5) meV.
Collapse
Affiliation(s)
- P Babkevich
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Vamshi M Katukuri
- Chair of Computational Condensed Matter Physics, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - B Fåk
- Institut Laue-Langevin, CS 20156, F-38042 Grenoble Cedex 9, France
| | - S Rols
- Institut Laue-Langevin, CS 20156, F-38042 Grenoble Cedex 9, France
| | - T Fennell
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
| | - D Pajić
- Department of Physics, Faculty of Science, University of Zagreb, Bijenička cesta 32, HR-10000 Zagreb, Croatia
| | - H Tanaka
- Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
| | - T Pardini
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - R R P Singh
- Department of Physics, University of California, Davis, California 95616, USA
| | - A Mitrushchenkov
- Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Université Paris-Est, 5 boulevard Descartes, 77454 Marne-la-Vallée, France
| | - O V Yazyev
- Chair of Computational Condensed Matter Physics, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - H M Rønnow
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| |
Collapse
|
3
|
Alcover-Fortuny G, Caballol R, Pierloot K, de Graaf C. Role of the Imide Axial Ligand in the Spin and Oxidation State of Manganese Corrole and Corrolazine Complexes. Inorg Chem 2016; 55:5274-80. [DOI: 10.1021/acs.inorgchem.6b00194] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gerard Alcover-Fortuny
- Departament de Química
Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí
Domingo s/n, 43007 Tarragona, Spain
| | - Rosa Caballol
- Departament de Química
Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí
Domingo s/n, 43007 Tarragona, Spain
| | - Kristine Pierloot
- Department of Chemistry, University of Leuven, Celestijnenlaan 200F, B-3001 Heverlee-Leuven, Belgium
| | - Coen de Graaf
- Departament de Química
Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí
Domingo s/n, 43007 Tarragona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluis Companys 23, 08010, Barcelona, Spain
| |
Collapse
|
4
|
Tenti L, Maynau D, Angeli C, Calzado CJ. Highly efficient perturbative + variational strategy based on orthogonal valence bond theory for the evaluation of magnetic coupling constants. Application to the trinuclear Cu(ii) site of multicopper oxidases. Phys Chem Chem Phys 2016; 18:18365-80. [DOI: 10.1039/c6cp03234f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new perturbative + variational strategy: a low-cost, quantitative and rational evaluation of the magnetic coupling constant in complex systems.
Collapse
Affiliation(s)
- Lorenzo Tenti
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università degli Studi di Ferrara
- 44121 Ferrara
- Italy
| | - Daniel Maynau
- Laboratoire de Chimie et Physique Quantique
- IRSAMC
- Université de Toulouse
- 31062 Toulouse
- France
| | - Celestino Angeli
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università degli Studi di Ferrara
- 44121 Ferrara
- Italy
| | | |
Collapse
|
5
|
Ozarowski A, Calzado CJ, Sharma RP, Kumar S, Jezierska J, Angeli C, Spizzo F, Ferretti V. Metal–Metal Interactions in Trinuclear Copper(II) Complexes [Cu3(RCOO)4(H2TEA)2] and Binuclear [Cu2(RCOO)2(H2TEA)2]. Syntheses and Combined Structural, Magnetic, High-Field Electron Paramagnetic Resonance, and Theoretical Studies. Inorg Chem 2015; 54:11916-34. [DOI: 10.1021/acs.inorgchem.5b02199] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew Ozarowski
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
| | - Carmen J. Calzado
- Departamento de Química Física, Universidad de Sevilla, c/Prof. García González, s/n, 41012 Sevilla, Spain
| | - Raj Pal Sharma
- Department of Chemistry, Panjab University, Chandigarh 160014, India
| | - Santosh Kumar
- Department of Chemistry, Panjab University, Chandigarh 160014, India
| | - Julia Jezierska
- Faculty of Chemistry, Wroclaw University, 14 F. Joliot Curie Str., 50-383 Wroclaw, Poland
| | | | - Federico Spizzo
- Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, Via Saragat 1, I-44122 Ferrara, Italy
| | | |
Collapse
|
6
|
Jung J, Guennic BL, Fedin MV, Ovcharenko VI, Calzado CJ. Mechanism of Magnetostructural Transitions in Copper-Nitroxide-Based Switchable Molecular Magnets: Insights from ab Initio Quantum Chemistry Calculations. Inorg Chem 2015; 54:6891-9. [PMID: 26125503 DOI: 10.1021/acs.inorgchem.5b00794] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The gradual magnetostructural transition in breathing crystals based on copper(II) and pyrazolyl-substituted nitronyl nitroxides has been analyzed by means of DDCI quantum chemistry calculations. The magnetic coupling constants (J) within the spin triads of Cu(hfac)2L(Bu)·0.5C8H18 have been evaluated for the X-ray structures reported at different temperatures. The coupling is strongly antiferromagnetic at low temperature and becomes ferromagnetic when the temperature increases. The intercluster magnetic coupling (J') is antiferromagnetic and shows a marked dependence on temperature. The magnetostructural transition can be reproduced using the calculated J values for each structure in the simulation of the magnetic susceptibility. However, the μ(T) curve can be improved nicely by considering the coexistence of two phases in the transition region, whose ratio varies with temperature corresponding to both the weakly and strongly coupled spin states. These results complement a recent VT-FTIR study on the parent Cu(hfac)2L(Pr) compound with a gradual magnetostructural transition.
Collapse
Affiliation(s)
- Julie Jung
- †Departamento de Química Física, Universidad de Sevilla, Sevilla, Spain.,‡Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, 263 Avenue du Général Leclerc, 35042 Cedex Rennes, France
| | - Boris Le Guennic
- ‡Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, 263 Avenue du Général Leclerc, 35042 Cedex Rennes, France
| | - Matvey V Fedin
- §International Tomography Center, Siberian Branch of Russian Academy of Science and Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Victor I Ovcharenko
- §International Tomography Center, Siberian Branch of Russian Academy of Science and Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Carmen J Calzado
- †Departamento de Química Física, Universidad de Sevilla, Sevilla, Spain
| |
Collapse
|
7
|
Spivak M, Angeli C, Calzado CJ, de Graaf C. Improving the calculation of magnetic coupling constants in MRPT methods. J Comput Chem 2014; 35:1665-71. [DOI: 10.1002/jcc.23672] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 05/31/2014] [Accepted: 06/05/2014] [Indexed: 01/29/2023]
Affiliation(s)
- Mariano Spivak
- Departament de Quimica Fisica i Inorgànica; Universitat Rovira i Virgili; Marcel lí Domingo s/n E-43007 Tarragona Spain
| | - Celestino Angeli
- Dipartimento di Scienze Chimiche e Famaceutiche; Università di Ferrara; Via Fossato di Mortara 17 I-44121 Ferrara Italy
| | - Carmen J. Calzado
- Departamento de Química Física; Universidad de Sevilla; c/Profesor García González s/n E-41012 Sevilla Spain
| | - Coen de Graaf
- Departament de Quimica Fisica i Inorgànica; Universitat Rovira i Virgili; Marcel lí Domingo s/n E-43007 Tarragona Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA); Passeig Lluis Companys 23 08010 Barcelona Spain
| |
Collapse
|
8
|
Lupascu A, Clancy JP, Gretarsson H, Nie Z, Nichols J, Terzic J, Cao G, Seo SSA, Islam Z, Upton MH, Kim J, Casa D, Gog T, Said AH, Katukuri VM, Stoll H, Hozoi L, van den Brink J, Kim YJ. Tuning magnetic coupling in Sr2IrO4 thin films with epitaxial strain. PHYSICAL REVIEW LETTERS 2014; 112:147201. [PMID: 24766006 DOI: 10.1103/physrevlett.112.147201] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Indexed: 06/03/2023]
Abstract
We report x-ray resonant magnetic scattering and resonant inelastic x-ray scattering studies of epitaxially strained Sr2IrO4 thin films. The films were grown on SrTiO3 and (LaAlO3)0.3(Sr2AlTaO6)0.7 substrates, under slight tensile and compressive strains, respectively. Although the films develop a magnetic structure reminiscent of bulk Sr2IrO4, the magnetic correlations are extremely anisotropic, with in-plane correlation lengths significantly longer than the out-of-plane correlation lengths. In addition, the compressive (tensile) strain serves to suppress (enhance) the magnetic ordering temperature TN, while raising (lowering) the energy of the zone-boundary magnon. Quantum chemical calculations show that the tuning of magnetic energy scales can be understood in terms of strain-induced changes in bond lengths.
Collapse
Affiliation(s)
- A Lupascu
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - J P Clancy
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - H Gretarsson
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - Zixin Nie
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - J Nichols
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - J Terzic
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - G Cao
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - S S A Seo
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - Z Islam
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - M H Upton
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Jungho Kim
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Casa
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - T Gog
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - A H Said
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Vamshi M Katukuri
- Institute for Theoretical Solid State Physics, IFW Dresden, Helmholtzstrasse. 20, 01069 Dresden, Germany
| | - H Stoll
- Institute for Theoretical Chemistry, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - L Hozoi
- Institute for Theoretical Solid State Physics, IFW Dresden, Helmholtzstrasse. 20, 01069 Dresden, Germany
| | - J van den Brink
- Institute for Theoretical Solid State Physics, IFW Dresden, Helmholtzstrasse. 20, 01069 Dresden, Germany
| | - Young-June Kim
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| |
Collapse
|
9
|
Harris TV, Kurashige Y, Yanai T, Morokuma K. Ab initio density matrix renormalization group study of magnetic coupling in dinuclear iron and chromium complexes. J Chem Phys 2014; 140:054303. [DOI: 10.1063/1.4863345] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
10
|
Sharma RP, Saini A, Venugopalan P, Ferretti V, Spizzo F, Angeli C, Calzado CJ. Magnetic behaviour vs. structural changes in an isomeric series of binuclear copper(ii) complexes: an experimental and theoretical study. NEW J CHEM 2014. [DOI: 10.1039/c3nj01080e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
11
|
Calzado CJ, Evangelisti S. Exchange interactions in [2 × 2] Cu(ii) grids: on the reliability of the fitting spin models. Dalton Trans 2014; 43:2988-96. [DOI: 10.1039/c3dt53168f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
12
|
Malrieu JP, Caballol R, Calzado CJ, de Graaf C, Guihéry N. Magnetic interactions in molecules and highly correlated materials: physical content, analytical derivation, and rigorous extraction of magnetic Hamiltonians. Chem Rev 2013; 114:429-92. [PMID: 24102410 DOI: 10.1021/cr300500z] [Citation(s) in RCA: 282] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jean Paul Malrieu
- Laboratoire de Chimie et Physique Quantiques, Université de Toulouse 3 , 118 route de Narbonne, 31062 Toulouse, France
| | | | | | | | | |
Collapse
|
13
|
Bandeira NAG, Maynau D, Robert V, Le Guennic B. Do π–π Stacking Interactions Really Play a Role in the Magnetic Coupling Mechanisms of [Cu2(μ2-CH3COO)2L2(H2O)2]n+ (L = heterocyclic base, n = 0, 2) Complexes? An ab initio Inspection. Inorg Chem 2013; 52:7980-6. [DOI: 10.1021/ic400517z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nuno A. G. Bandeira
- C8−Fac. Ciências, University de Lisboa, Campo Grande, 1749-016 Lisbon,
Portugal
- Laboratoire de Chimie, UMR CNRS 5182, Ecole Normale Supérieure de Lyon, 46 allée
d’Italie, 69364 Lyon cedex 07, France
| | - Daniel Maynau
- Université de Toulouse, UPS, LCPQ (Laboratoire de Chimie et Physique
Quantiques), IRSAMC, 118 route de Narbonne, 31062 Toulouse cedex,
France
| | - Vincent Robert
- Laboratoire de Chimie
Quantique, Institut de Chimie UMR 7177, CNRS and Université de Strasbourg, 4 rue Blaise Pascal, Strasbourg 67070,
France
- Laboratoire de Chimie, UMR CNRS 5182, Ecole Normale Supérieure de Lyon, 46 allée
d’Italie, 69364 Lyon cedex 07, France
| | - Boris Le Guennic
- Institut des Sciences
Chimiques de Rennes, Université de Rennes 1, CNRS 6226, 35042, Rennes Cedex, France
- Laboratoire de Chimie, UMR CNRS 5182, Ecole Normale Supérieure de Lyon, 46 allée
d’Italie, 69364 Lyon cedex 07, France
| |
Collapse
|
14
|
Bogdanov NA, Maurice R, Rousochatzakis I, van den Brink J, Hozoi L. Magnetic state of pyrochlore Cd(2)Os(2)O(7) emerging from strong competition of ligand distortions and longer-range crystalline anisotropy. PHYSICAL REVIEW LETTERS 2013; 110:127206. [PMID: 25166841 DOI: 10.1103/physrevlett.110.127206] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Indexed: 06/03/2023]
Abstract
By many-body quantum-chemical calculations, we investigate the role of two structural effects--local ligand distortions and the anisotropic Cd-ion coordination--on the magnetic state of Cd(2)Os(2)O(7), a spin S = 3/2 pyrochlore. We find that these effects strongly compete, rendering the magnetic interactions and ordering crucially dependent on these geometrical features. Without trigonal distortions, a large easy-plane magnetic anisotropy develops. Their presence, however, reverses the sign of the zero-field splitting and causes a large easy-axis anisotropy (D ≃ -6.8 meV), which in conjunction with the antiferromagnetic exchange interaction (J ≃ 6.4 meV) stabilizes an all-in-all-out magnetic order. The competition uncovered here is a generic feature of pyrochlore magnets.
Collapse
Affiliation(s)
- Nikolay A Bogdanov
- Institute for Theoretical Solid State Physics, IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Rémi Maurice
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, Rijksuniversiteit Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Ioannis Rousochatzakis
- Institute for Theoretical Solid State Physics, IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| | - Jeroen van den Brink
- Institute for Theoretical Solid State Physics, IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany and Department of Physics, Technical University Dresden, 01062 Dresden, Germany
| | - Liviu Hozoi
- Institute for Theoretical Solid State Physics, IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany
| |
Collapse
|
15
|
Calzado CJ. On the Controversial Fitting of Susceptibility Curves of Ferromagnetic CuIICubanes: Insights from Theoretical Calculations. Chemistry 2012; 19:1254-61. [DOI: 10.1002/chem.201203474] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Indexed: 11/09/2022]
|
16
|
Zapata-Rivera J, Caballol R, Calzado CJ. The role of macrocyclic ligands in the peroxo/superoxo nature of Ni-O2biomimetic complexes. J Comput Chem 2012; 33:1407-15. [DOI: 10.1002/jcc.22965] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 02/26/2012] [Accepted: 02/28/2012] [Indexed: 01/17/2023]
Affiliation(s)
- Jhon Zapata-Rivera
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo, s/n. 43007 Tarragona, Spain
| | | | | |
Collapse
|
17
|
Calzado CJ, Maynau D. Evaluation of magnetic terms in Cu4O4 cubane-like systems from selected configuration interaction calculations: A case study of polynuclear transition-metal systems. J Chem Phys 2011; 135:194704. [DOI: 10.1063/1.3659141] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
18
|
Negodaev I, de Graaf C, Caballol R, Lukov V. On the magnetic coupling in asymmetric bridged Cu(II) dinuclear complexes: The influence of substitutions on the carboxylato group. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.04.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Angeli C, Calzado CJ, de Graaf C, Caballol R. The electronic structure of Ullman's biradicals: an orthogonal valence bond interpretation. Phys Chem Chem Phys 2011; 13:14617-28. [DOI: 10.1039/c1cp20887j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
20
|
Zapata-Rivera J, Caballol R, Calzado CJ. Comparing the peroxo/superoxo nature of the interaction between molecular O2 and β-diketiminato-copper and nickel complexes. Phys Chem Chem Phys 2011; 13:20241-7. [DOI: 10.1039/c1cp22121c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
21
|
Zapata-Rivera J, Caballol R, Calzado CJ. Electronic structure and relative stability of 1:1 Cu-O2 adducts from difference-dedicated configuration interaction calculations. J Comput Chem 2010; 32:1144-58. [DOI: 10.1002/jcc.21697] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Revised: 09/13/2010] [Accepted: 09/13/2010] [Indexed: 11/11/2022]
|
22
|
Tabookht Z, López X, Bénard M, Graaf CD. Isotropic Non-Heisenberg Behavior in M3(dpa)4Cl2 Extended Metal Atom Chains. J Phys Chem A 2010; 114:12291-8. [DOI: 10.1021/jp106038w] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zahra Tabookht
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel.lí Domingo, s/n, 43007, Tarragona, Spain, Laboratoire de Chimie Quantique, Institut de Chimie, LC3-UMR 7177, CNRS-ULP, Strasbourg, France, and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Company, 23, 08010 Barcelona, Spain
| | - Xavier López
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel.lí Domingo, s/n, 43007, Tarragona, Spain, Laboratoire de Chimie Quantique, Institut de Chimie, LC3-UMR 7177, CNRS-ULP, Strasbourg, France, and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Company, 23, 08010 Barcelona, Spain
| | - Marc Bénard
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel.lí Domingo, s/n, 43007, Tarragona, Spain, Laboratoire de Chimie Quantique, Institut de Chimie, LC3-UMR 7177, CNRS-ULP, Strasbourg, France, and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Company, 23, 08010 Barcelona, Spain
| | - Coen de Graaf
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel.lí Domingo, s/n, 43007, Tarragona, Spain, Laboratoire de Chimie Quantique, Institut de Chimie, LC3-UMR 7177, CNRS-ULP, Strasbourg, France, and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Company, 23, 08010 Barcelona, Spain
| |
Collapse
|
23
|
|
24
|
Monari A, Maynau D, Malrieu JP. Determination of spin Hamiltonians from projected single reference configuration interaction calculations. I. Spin 1/2 systems. J Chem Phys 2010; 133:044106. [DOI: 10.1063/1.3458642] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
25
|
Rota JB, Calzado CJ, Train C, Robert V. Microscopic origins of the ferromagnetic exchange coupling in oxoverdazyl-based Cu(II) complex. J Chem Phys 2010; 132:154702. [DOI: 10.1063/1.3378023] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
26
|
Calzado CJ, Angeli C, Caballol R, Malrieu JP. Extending the active space in multireference configuration interaction calculations of magnetic coupling constants. Theor Chem Acc 2009. [DOI: 10.1007/s00214-009-0642-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
27
|
Calzado CJ, Angeli C, Taratiel D, Caballol R, Malrieu JP. Analysis of the magnetic coupling in binuclear systems. III. The role of the ligand to metal charge transfer excitations revisited. J Chem Phys 2009; 131:044327. [DOI: 10.1063/1.3185506] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
28
|
Helal W, Evangelisti S, Leininger T, Maynau D. Ab-initiomultireference study of an organic mixed-valence Spiro molecular system. J Comput Chem 2009; 30:83-92. [DOI: 10.1002/jcc.20982] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
29
|
Hoyau S, Amor NB, Borini S, Evangelisti S, Maynau D. Acetone–water complexes at MRCI level using localized orbitals: n→π∗ and π→π∗ electronic transitions. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2007.11.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
30
|
Angeli C, Sparta† M, Cimiraglia R. A priori complete active space self consistent field localized orbitals: an application on linear polyenes. Mol Phys 2007. [DOI: 10.1080/00268970500417903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Celestino Angeli
- a Dipartimento di Chimica , Università di Ferrara , Via Borsari 46, I-44100 Ferrara, Italy
| | - Manuel Sparta†
- a Dipartimento di Chimica , Università di Ferrara , Via Borsari 46, I-44100 Ferrara, Italy
| | - Renzo Cimiraglia
- a Dipartimento di Chimica , Università di Ferrara , Via Borsari 46, I-44100 Ferrara, Italy
| |
Collapse
|
31
|
Abstract
A new selected-configuration interaction method is proposed, based on the use of local orbitals. A corresponding code has been written, which is devoted to CI calculations of rather large systems (about 50-100 carbon-like atoms). Taking advantage of the locality, and then of the fact that interactions vanish when the distance is large, the dimension of the CI space is largely reduced. The determinants that would be created by long range excitations are expected to have a small weight in the wave function and are therefore eliminated. This selected excitation CI space is particularly suited for large molecules. It is tested on large polyene chains and on a transition metal complex. For large enough systems, the CPU time saving is important and, what is more noticeable, calculations that were impossible to perform without selection are feasible in this approach.
Collapse
Affiliation(s)
- Benoît Bories
- Laboratoire de Chimie et Physique Quantiques, IRSAMC, Université Paul Sabatier, 118, Route de Narbonne, Toulouse Cedex 31062, France
| | | | | |
Collapse
|
32
|
Wang B, Wei H, Wang M, Chen Z. Ab initiomultireference configuration-interaction theoretical study on the low-lying spin states in binuclear transition-metal complex: Magnetic exchange of [(NH3)5Cr(μ-OH)Cr(NH3)5]5+ and [Cl3FeOFeCl3]2−. J Chem Phys 2005; 122:204310. [PMID: 15945727 DOI: 10.1063/1.1899145] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The magnetic exchange interaction behavior and energy spectrum of low-lying spin states are investigated by using ab initio multireference configuration-interaction method for the representative binuclear transition-metal complexes [(NH(3))(5)Cr(mu-OH)Cr(NH(3))(5)](5+) and [Cl(3)FeOFeCl(3)](2-). Our calculations for the nonmodeling real title complexes found that under the appropriate basis sets and active space, ab initio method at multireference configuration-interaction level of theory is able to give accurate energy spectrum of low-lying spin states within reachable computation demand nowadays and the deviation of magnetic exchange interaction to Lande interval rule can be described by the biquadratic correction in terms of Heisenberg spin Hamiltonian. As a methodology comparison, density-functional theory combined with broken-symmetry approach provides an alternative yet efficient approach to produce accurate numerical results, but there are dependences on the particular chosen exchange-correlation functionals and system dependent. The spin population analyses at complete active space self-consistent-field level of the theory provide an instructively understanding and prediction for the magnetic interaction mechanism.
Collapse
Affiliation(s)
- Bingwu Wang
- State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | | | | | | |
Collapse
|
33
|
Junquera-Hernández JM, Pitarch-Ruiz J, Sánchez-Marín J, Evangelisti S, Maynau D. Multistate active spaces from local CAS-SCF molecular orbitals: The photodissociation of HFCO as an example. J Comput Chem 2005; 26:1254-62. [PMID: 15965970 DOI: 10.1002/jcc.20262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A recently developed algorithm to generate localized molecular orbitals (LMO) is applied to the study of excited states along a photodissociation process. The LMOs allow for the selection of a consistent complete active space (CAS) for the simultaneous description of all the electronic states involved in a multistate process on the basis of simple chemical criteria. The local nature of the orbitals is used to label them in a unique way that does not depend on the molecular geometry. The selection of the electronic configurations of interest for the set of target states on only the basis of the dominant excitations required by the simplest configuration interaction (CI) descriptions for both ground and excited states is fairly simplified. The following of the changes in the nature of the states along cuts in the set of potential energy surfaces (PES) is also simpler. The C--F bond breaking and the states involved in the photodissociation of the HFCO system, together with another geometrical path along the PES of the same previous states, are studied by way of examples in this work. The local nature of the MOs warrants that this small system is representative enough to show the advantages of the procedure and that its application to larger systems (R-FCO systems) would be straightforward.
Collapse
Affiliation(s)
- J M Junquera-Hernández
- Departament de Química-Física, Institut de Ciència Molecular, Facultat de Ciències Químiques, Universitat de València, Dr. Moliner, 50, E-46100 Burjassot (València), Spain
| | | | | | | | | |
Collapse
|
34
|
|
35
|
Guihéry N, Malrieu JP. The double exchange mechanism revisited: An ab initio study of the [Ni2(napy)4Br2]+ complex. J Chem Phys 2003. [DOI: 10.1063/1.1614249] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|