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Consiglio A, Gatti G, Martino E, Moreschini L, Johannsen JC, Prša K, Freeman PG, Sheptyakov D, Rønnow HM, Scopelliti R, Magrez A, Forró L, Schmitt C, Jovic V, Jozwiak C, Bostwick A, Rotenberg E, Hofmann T, Thomale R, Sangiovanni G, Di Sante D, Greiter M, Grioni M, Moser S. Electron Glass Phase with Resilient Zhang-Rice Singlets in LiCu_{3}O_{3}. PHYSICAL REVIEW LETTERS 2024; 132:126502. [PMID: 38579201 DOI: 10.1103/physrevlett.132.126502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 02/12/2024] [Indexed: 04/07/2024]
Abstract
LiCu_{3}O_{3} is an antiferromagnetic mixed valence cuprate where trilayers of edge-sharing Cu(II)O (3d^{9}) are sandwiched in between planes of Cu(I) (3d^{10}) ions, with Li stochastically substituting Cu(II). Angle-resolved photoemission spectroscopy (ARPES) and density functional theory reveal two insulating electronic subsystems that are segregated in spite of sharing common oxygen atoms: a Cu d_{z^{2}}/O p_{z} derived valence band (VB) dispersing on the Cu(I) plane, and a Cu 3d_{x^{2}-y^{2}}/O 2p_{x,y} derived Zhang-Rice singlet (ZRS) band dispersing on the Cu(II)O planes. First-principle analysis shows the Li substitution to stabilize the insulating ground state, but only if antiferromagnetic correlations are present. Li further induces substitutional disorder and a 2D electron glass behavior in charge transport, reflected in a large 530 meV Coulomb gap and a linear suppression of VB spectral weight at E_{F} that is observed by ARPES. Surprisingly, the disorder leaves the Cu(II)-derived ZRS largely unaffected. This indicates a local segregation of Li and Cu atoms onto the two separate corner-sharing Cu(II)O_{2} sub-lattices of the edge-sharing Cu(II)O planes, and highlights the ubiquitous resilience of the entangled two hole ZRS entity against impurity scattering.
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Affiliation(s)
- A Consiglio
- Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, 97074 Würzburg, Germany
| | - G Gatti
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - E Martino
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - L Moreschini
- Advanced Light Source (ALS), Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA
| | - J C Johannsen
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - K Prša
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - P G Freeman
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
- Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy, University of Central Lancashire, Preston PR1 2HE, United Kingdom
| | - D Sheptyakov
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - H M Rønnow
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - R Scopelliti
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - A Magrez
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - L Forró
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
- Stavropoulos Center for Complex Quantum Matter, Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - C Schmitt
- Physikalisches Institut and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, Würzburg 97074, Germany
| | - V Jovic
- Advanced Light Source (ALS), Berkeley, California 94720, USA
- Earth Resources and Materials, Institute of Geological and Nuclear Science, Lower Hutt 5010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6012, New Zealand
| | - C Jozwiak
- Advanced Light Source (ALS), Berkeley, California 94720, USA
| | - A Bostwick
- Advanced Light Source (ALS), Berkeley, California 94720, USA
| | - E Rotenberg
- Advanced Light Source (ALS), Berkeley, California 94720, USA
| | - T Hofmann
- Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, 97074 Würzburg, Germany
| | - R Thomale
- Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, 97074 Würzburg, Germany
| | - G Sangiovanni
- Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, 97074 Würzburg, Germany
| | - D Di Sante
- Department of Physics and Astronomy, University of Bologna, Bologna, Italy
| | - M Greiter
- Institut für Theoretische Physik und Astrophysik and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, 97074 Würzburg, Germany
| | - M Grioni
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - S Moser
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
- Advanced Light Source (ALS), Berkeley, California 94720, USA
- Physikalisches Institut and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, Würzburg 97074, Germany
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Momentum-resolved visualization of electronic evolution in doping a Mott insulator. Nat Commun 2021; 12:1356. [PMID: 33649302 PMCID: PMC7921433 DOI: 10.1038/s41467-021-21605-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 01/29/2021] [Indexed: 11/25/2022] Open
Abstract
High temperature superconductivity in cuprates arises from doping a parent Mott insulator by electrons or holes. A central issue is how the Mott gap evolves and the low-energy states emerge with doping. Here we report angle-resolved photoemission spectroscopy measurements on a cuprate parent compound by sequential in situ electron doping. The chemical potential jumps to the bottom of the upper Hubbard band upon a slight electron doping, making it possible to directly visualize the charge transfer band and the full Mott gap region. With increasing doping, the Mott gap rapidly collapses due to the spectral weight transfer from the charge transfer band to the gapped region and the induced low-energy states emerge in a wide energy range inside the Mott gap. These results provide key information on the electronic evolution in doping a Mott insulator and establish a basis for developing microscopic theories for cuprate superconductivity. How a Mott insulating state evolves into a conducting or superconducting state is a central issue in doping a Mott insulator and important to understand the physics in high temperature cuprate superconductors. Here, the authors visualize the electronic structure evolution of a Mott insulator within the full Mott gap region and address the fundamental issues.
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Ebrahimnejad H, Sawatzky GA, Berciu M. Differences between the insulating limit quasiparticles of one-band and three-band cuprate models. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:105603. [PMID: 26886848 DOI: 10.1088/0953-8984/28/10/105603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We study the charge dynamics of the quasiparticle that forms when a single hole is doped in a two-dimensional antiferromagnet as described by the one-band t-t'-t"-J model, using a variational approximation that includes spin fluctuations in the vicinity of the hole. We explain why the spin fluctuations and the longer range hopping have complementary contributions to the quasiparticle dynamics, and thus why both are essential to obtain a dispersion in agreement with that measured experimentally. This is very different from the three-band Emery model in the strongly-correlated limit, where the same variational approximation shows that spin fluctuations have a minor effect on the quasiparticle dynamics. This difference proves that these one-band and three-band models describe qualitatively different quasiparticles in the insulating limit, and therefore that they cannot both be suitable to describe the physics of very underdoped cuprates.
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Affiliation(s)
- H Ebrahimnejad
- Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
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Adolphs CPJ, Moser S, Sawatzky GA, Berciu M. Non-Zhang-Rice Singlet Character of the First Ionization State of T-CuO. PHYSICAL REVIEW LETTERS 2016; 116:087002. [PMID: 26967437 DOI: 10.1103/physrevlett.116.087002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Indexed: 06/05/2023]
Abstract
We argue that tetragonal CuO (T-CuO) has the potential to finally settle long-standing modeling issues for cuprate physics. We compare the one-hole quasiparticle (qp) dispersion of T-CuO to that of cuprates, in the framework of the strongly correlated (U_{dd}→∞) limit of the three-band Emery model. Unlike in CuO_{2}, magnetic frustration in T-CuO breaks the C_{4} rotational symmetry and leads to strong deviations from the Zhang-Rice singlet picture in parts of the reciprocal space. Our results are consistent with angle-resolved photoemission spectroscopy data but in sharp contradiction to those of a one-band model previously suggested for them. These differences identify T-CuO as an ideal material to test a variety of scenarios proposed for explaining cuprate phenomenology.
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Affiliation(s)
- Clemens P J Adolphs
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z1
| | - Simon Moser
- Institute of Condensed Matter Physics, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland
- Advanced Light Source, Berkeley, California 94720, USA
| | - George A Sawatzky
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z1
- Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z4
| | - Mona Berciu
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z1
- Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z4
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Moser S, Moreschini L, Yang HY, Innocenti D, Fuchs F, Hansen NH, Chang YJ, Kim KS, Walter AL, Bostwick A, Rotenberg E, Mila F, Grioni M. Angle-resolved photoemission spectroscopy of tetragonal CuO: evidence for intralayer coupling between cupratelike sublattices. PHYSICAL REVIEW LETTERS 2014; 113:187001. [PMID: 25396389 DOI: 10.1103/physrevlett.113.187001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Indexed: 06/04/2023]
Abstract
We investigate by angle-resolved photoemission the electronic structure of in situ grown tetragonal CuO, a synthetic quasi-two-dimensional edge-sharing cuprate. We show that, in spite of the very different nature of the copper oxide layers, with twice as many Cu in the CuO layers of tetragonal CuO as compared to the CuO(2) layers of the high-T(c) cuprates, the low-energy electronic excitations are surprisingly similar, with a Zhang-Rice singlet dispersing on weakly coupled cupratelike sublattices. This system should thus be considered as a member of the high-T(c) cuprate family, with, however, interesting differences due to the intralayer coupling between the cupratelike sublattices.
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Affiliation(s)
- S Moser
- Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland and Advanced Light Source (ALS), Berkeley, California 94720, USA
| | - L Moreschini
- Advanced Light Source (ALS), Berkeley, California 94720, USA
| | - H-Y Yang
- Institute of Theoretical Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - D Innocenti
- Advanced Light Source (ALS), Berkeley, California 94720, USA and Dipartimento di Ingegneria Meccanica, Università di Roma Tor Vergata, I-00133 Roma, Italy
| | - F Fuchs
- Experimental Physics VI, Julius-Maximilian University of Würzburg, 97074 Würzburg, Germany
| | - N H Hansen
- Experimental Physics VI, Julius-Maximilian University of Würzburg, 97074 Würzburg, Germany and ZAE Bayern, Am Hubland, 97074 Würzburg, Germany
| | - Y J Chang
- Advanced Light Source (ALS), Berkeley, California 94720, USA and Department of Physics, University of Seoul, Seoul 130-743, Korea
| | - K S Kim
- Advanced Light Source (ALS), Berkeley, California 94720, USA and Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Korea and Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang 790-784, Korea
| | - A L Walter
- Advanced Light Source (ALS), Berkeley, California 94720, USA and Department of Physical Chemistry, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - A Bostwick
- Advanced Light Source (ALS), Berkeley, California 94720, USA
| | - E Rotenberg
- Advanced Light Source (ALS), Berkeley, California 94720, USA
| | - F Mila
- Institute of Theoretical Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - M Grioni
- Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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Smadici S, Logvenov G, Bozovic I, Abbamonte P. Sequence of hole resonances in complex oxide heterostructures. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:155302. [PMID: 24675566 DOI: 10.1088/0953-8984/26/15/155302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Resonant soft x-ray scattering measurements at the O K edge on Sr2CuO4-ν/La2NiO4+δ (SCO/LNO) complex oxide superlattices show resonances for holes in the two constituent layers, in a sequence of energy levels. The observation of well defined resonances, on a superlattice with layers one unit cell thick, indicates that the resonance energy is largely unaffected by atoms outside a cluster extending half a unit cell along the c axis, consistent with calculations for bulk materials. Comparison to measurements on related superlattices confirms that the order of resonances at the O K edge reflects the order of hole ground-state energies in the heterostructure buried layers. For the SCO/LNO superlattices, the measurements show that the ground-state energies remain different in very thin SCO and LNO layers, which is a contributing factor when considering electronic reconstruction at interfaces, in addition to the areal density of ionic charges in the atomic planes. Different hole energy levels in the SCO/LNO superlattice also imply that holes do not spread into SCO from LNO layers.
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Affiliation(s)
- S Smadici
- Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, USA. Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, IL 61801, USA
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7
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Ab Initio determination of Cu 3d orbital energies in layered copper oxides. Sci Rep 2011; 1:65. [PMID: 22355584 PMCID: PMC3216552 DOI: 10.1038/srep00065] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 07/26/2011] [Indexed: 11/08/2022] Open
Abstract
It has long been argued that the minimal model to describe the low-energy physics of the high T(c) superconducting cuprates must include copper states of other symmetries besides the canonical [see text] one, in particular the [see text] orbital. Experimental and theoretical estimates of the energy splitting of these states vary widely. With a novel ab initio quantum chemical computational scheme we determine these energies for a range of copper-oxides and -oxychlorides, determine trends with the apical Cu-ligand distances and find excellent agreement with recent Resonant Inelastic X-ray Scattering measurements, available for La(2)CuO(4), Sr(2)CuO(2)Cl(2), and CaCuO(2).
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Schlappa J, Schmitt T, Vernay F, Strocov VN, Ilakovac V, Thielemann B, Rønnow HM, Vanishri S, Piazzalunga A, Wang X, Braicovich L, Ghiringhelli G, Marin C, Mesot J, Delley B, Patthey L. Collective magnetic excitations in the spin ladder Sr14Cu24O41 measured using high-resolution resonant inelastic x-ray scattering. PHYSICAL REVIEW LETTERS 2009; 103:047401. [PMID: 19659397 DOI: 10.1103/physrevlett.103.047401] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Indexed: 05/28/2023]
Abstract
We investigate magnetic excitations in the spin-ladder compound Sr_{14}Cu_{24}O_{41} using high-resolution Cu L_{3} edge resonant inelastic x-ray scattering (RIXS). Our findings demonstrate that RIXS couples to two-triplon collective excitations. In contrast to inelastic neutron scattering, the RIXS cross section changes only moderately over the entire Brillouin zone, revealing high sensitivity also at small momentum transfers, allowing determination of the two-triplon energy gap as 100 +/- 30 meV. Our results are backed by calculations within an effective Hubbard model for a finite-size cluster, and confirm that optical selection rules are obeyed for excitations from this spherically symmetric quantum spin-liquid ground state.
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Affiliation(s)
- J Schlappa
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
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9
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Anisimov VI, Korotin DM, Korotin MA, Kozhevnikov AV, Kuneš J, Shorikov AO, Skornyakov SL, Streltsov SV. Coulomb repulsion and correlation strength in LaFeAsO from density functional and dynamical mean-field theories. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:075602. [PMID: 21817332 DOI: 10.1088/0953-8984/21/7/075602] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The LDA+DMFT (local density approximation combined with dynamical mean-field theory) computation scheme has been used to calculate spectral properties of LaFeAsO-the parent compound of the new high-T(c) iron oxypnictides. The average Coulomb repulsion [Formula: see text] and Hund's exchange J parameters for iron 3d electrons were calculated using the first-principles constrained density functional theory scheme in the Wannier functions formalism. Resulting values strongly depend on the number of states taken into account in the calculations: when the full set of O-2p, As-4p and Fe-3d orbitals and the corresponding bands are included, the interaction parameters [Formula: see text] eV and J = 0.8 eV are obtained. In contrast, when the basis set is restricted to the Fe-3d orbitals and bands only, the calculation gives much smaller values of [Formula: see text] eV, J = 0.5 eV. Nevertheless, DMFT calculations with both parameter sets and the corresponding basis sets result in a weakly correlated electronic structure that is in agreement with the experimental x-ray and photoemission spectra.
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Affiliation(s)
- V I Anisimov
- Institute of Metal Physics, Russian Academy of Sciences, 620041 Yekaterinburg GSP-170, Russia
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Hozoi L, Laad MS. Quasiparticle bands in cuprates by quantum-chemical methods: towards an ab initio description of strong electron correlations. PHYSICAL REVIEW LETTERS 2007; 99:256404. [PMID: 18233537 DOI: 10.1103/physrevlett.99.256404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2007] [Indexed: 05/25/2023]
Abstract
Realistic electronic-structure calculations for correlated Mott insulators are notoriously difficult. Here we present an ab initio multiconfiguration scheme that adequately describes strong correlation effects involving Cu 3d and O 2p electrons in layered cuprates. In particular, the O 2p states giving rise to the Zhang-Rice band are explicitly considered. Renormalization effects due to nonlocal spin interactions are also treated consistently. We show that the dispersion of the lowest band observed in photoemission is reproduced with quantitative accuracy. Additionally, the evolution of the Fermi surface with doping follows directly from our ab initio data. Our results thus open a new avenue for the first-principles investigation of the electronic structure of correlated Mott insulators.
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Affiliation(s)
- L Hozoi
- Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, 01187 Dresden, Germany
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Srivastava P, Studer F, Garg KB, Gasser C, Murray H, Pompa M. Role of out-of-plane copper orbitals in thallium cuprate. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:693-699. [PMID: 9984306 DOI: 10.1103/physrevb.54.693] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Raimondi R, Jefferson JH, Feiner LF. Effective single-band models for the high-Tc cuprates. II. Role of apical oxygen. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:8774-8788. [PMID: 9982390 DOI: 10.1103/physrevb.53.8774] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Casanovas J, Rubio J, Illas F. Origin of magnetic coupling in La2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:945-951. [PMID: 9983054 DOI: 10.1103/physrevb.53.945] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Belinicher VI, Chernyshev AL, Shubin VA. Generalized t-t'-J model: Parameters and single-particle spectrum for electrons and holes in copper oxides. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:335-342. [PMID: 9981982 DOI: 10.1103/physrevb.53.335] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yildirim T, Harris AB, Aharony A, Entin-Wohlman O. Anisotropic spin Hamiltonians due to spin-orbit and Coulomb exchange interactions. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:10239-10267. [PMID: 9980076 DOI: 10.1103/physrevb.52.10239] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Bala J, Oles AM, Zaanen J. Spin polarons in the t-t'-J model. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:4597-4606. [PMID: 9981597 DOI: 10.1103/physrevb.52.4597] [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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Yildirim T, Harris AB, Entin-Wohlman O, Aharony A. Symmetry, spin-orbit interactions, and spin anisotropies. PHYSICAL REVIEW LETTERS 1994; 73:2919-2922. [PMID: 10057229 DOI: 10.1103/physrevlett.73.2919] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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18
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Belinicher VI, Chernyshev AL, Popovich LV. Range of the t-J model parameters for CuO2 planes: Experimental data constraints. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:13768-13777. [PMID: 9975578 DOI: 10.1103/physrevb.50.13768] [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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Czyzyk MT, Sawatzky GA. Local-density functional and on-site correlations: The electronic structure of La2CuO4 and LaCuO3. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:14211-14228. [PMID: 10010501 DOI: 10.1103/physrevb.49.14211] [Citation(s) in RCA: 145] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Belinicher VI, Chernyshev AL. Consistent low-energy reduction of the three-band model for copper oxides with O-O hopping to the effective t-J model. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:9746-9756. [PMID: 10009774 DOI: 10.1103/physrevb.49.9746] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Ovchinnikov SG. Density of hole-doped states in strongly correlated electron systems of copper oxides. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:9891-9897. [PMID: 10009790 DOI: 10.1103/physrevb.49.9891] [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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Rubio J, Refolio MC. Nonplanar orbital effects on charge and spin fluctuations in doped cuprate superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:9125-9137. [PMID: 10009695 DOI: 10.1103/physrevb.49.9125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Tworzydlo J. Effect of the multiorbital structure of Cu2+ ions on the model Hamiltonian for superconducting cuprate oxides. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:6927-6932. [PMID: 10009419 DOI: 10.1103/physrevb.49.6927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wake DR. Sub-band-gap electronic excitations in insulating YBa2Cu3O6+x observed by resonant Raman scattering. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:3641-3644. [PMID: 10011245 DOI: 10.1103/physrevb.49.3641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Schleger P, Hardy WN, Casalta H. Model for the high-temperature oxygen-ordering thermodynamics in YBa2Cu3O6+x: Inclusion of electron spin and charge degrees of freedom. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:514-523. [PMID: 10009312 DOI: 10.1103/physrevb.49.514] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Eskes H, Jefferson JH. Superexchange in the cuprates. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:9788-9798. [PMID: 10007229 DOI: 10.1103/physrevb.48.9788] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Gros C, Valentí R. Cluster expansion for the self-energy: A simple many-body method for interpreting the photoemission spectra of correlated Fermi systems. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:418-425. [PMID: 10006793 DOI: 10.1103/physrevb.48.418] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Pellegrin E, Nücker N, Fink J, Molodtsov SL, Gutiérrez A, Navas E, Strebel O, Hu Z, Domke M, Kaindl G, Uchida S, Nakamura Y, Markl J, Klauda M, Saemann-Ischenko G, Krol A, Peng JL, Li ZY, Greene RL. Orbital character of states at the Fermi level in La2-xSrxCuO4 and R2-xCexCuO4 (R=Nd,Sm). PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:3354-3367. [PMID: 10006422 DOI: 10.1103/physrevb.47.3354] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Schlatmann R, Sawatzky GA, Groen WA. Doping dependence of the chemical potential in Bi2Sr2Ca1-xYxCu2O8+ delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:446-450. [PMID: 10004462 DOI: 10.1103/physrevb.47.446] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rubio J, Refolio MC. Doping dependence of the density of states for CuO2 clusters in the Hubbard model. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:11110-11116. [PMID: 10002976 DOI: 10.1103/physrevb.46.11110] [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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Grant JB, McMahan AK. Spin bags and quasiparticles in doped La2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:8440-8455. [PMID: 10002609 DOI: 10.1103/physrevb.46.8440] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Feiner LF, Grilli M. Apical oxygen ions and the electronic structure of the high-Tc cuprates. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:10647-10669. [PMID: 10000972 DOI: 10.1103/physrevb.45.10647] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hybertsen MS, Stechel EB, Foulkes WM, Schlüter M. Model for low-energy electronic states probed by x-ray absorption in high-Tc cuprates. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:10032-10050. [PMID: 10000892 DOI: 10.1103/physrevb.45.10032] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Jefferson JH, Eskes H, Feiner LF. Derivation of a single-band model for CuO2 planes by a cell-perturbation method. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:7959-7972. [PMID: 10000604 DOI: 10.1103/physrevb.45.7959] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chtaib M, Ghijsen J, Pireaux JJ, Caudano R, Johnson RL, Ortí E, Brédas JL. Photoemission study of the copper/poly(ethylene terephthalate) interface. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:10815-10825. [PMID: 9999108 DOI: 10.1103/physrevb.44.10815] [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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