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Chen J, Wang Y, Dou W. Floquet nonadiabatic mixed quantum-classical dynamics in periodically driven solid systems. J Chem Phys 2024; 160:214101. [PMID: 38828807 DOI: 10.1063/5.0204158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 05/16/2024] [Indexed: 06/05/2024] Open
Abstract
In this paper, we introduce the Floquet mean-field dynamics and Floquet surface hopping approaches to study the nonadiabatic dynamics in periodically driven solid systems. We demonstrate that these two approaches can be formulated in both real and reciprocal spaces. Using the two approaches, we are able to simulate the interaction between electronic carriers and phonons under periodic drivings, such as strong light-matter interactions. Employing the Holstein and Peierls models, we show that strong light-matter interactions can effectively modulate the dynamics of electronic population and mobility. Notably, our study demonstrates the feasibility and effectiveness of modeling low-momentum carriers' interactions with phonons using a truncated reciprocal space basis, an approach impractical in real space frameworks. Moreover, we reveal that even with a significant truncation, carrier populations derived from surface hopping maintain greater accuracy compared to those obtained via mean-field dynamics. These results underscore the potential of our proposed methods in advancing the understanding of carrier-phonon interactions in various periodically driven materials.
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Affiliation(s)
- Jingqi Chen
- Fudan University, 220 Handan Road, Shanghai 200433, China
- Department of Chemistry, School of Science, Westlake University, Hangzhou 310024, Zhejiang, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, Zhejiang, China
| | - Yu Wang
- Department of Chemistry, School of Science, Westlake University, Hangzhou 310024, Zhejiang, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, Zhejiang, China
| | - Wenjie Dou
- Department of Chemistry, School of Science, Westlake University, Hangzhou 310024, Zhejiang, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, Zhejiang, China
- Department of Physics, School of Science, Westlake University, Hangzhou 310024, Zhejiang, China
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Murthy C, Pandey A, Esterlis I, Kivelson SA. A stability bound on the [Formula: see text]-linear resistivity of conventional metals. Proc Natl Acad Sci U S A 2023; 120:e2216241120. [PMID: 36634139 PMCID: PMC9934301 DOI: 10.1073/pnas.2216241120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 12/06/2022] [Indexed: 01/13/2023] Open
Abstract
Perturbative considerations account for the properties of conventional metals, including the range of temperatures where the transport scattering rate is 1/τtr = 2πλT, where λ is a dimensionless strength of the electron-phonon coupling. The fact that measured values satisfy λ ≲ 1 has been noted in the context of a possible "Planckian" bound on transport. However, since the electron-phonon scattering is quasielastic in this regime, no such Planckian considerations can be relevant. We present and analyze Monte Carlo results on the Holstein model which show that a different sort of bound is at play: a "stability" bound on λ consistent with metallic transport. We conjecture that a qualitatively similar bound on the strength of residual interactions, which is often stronger than Planckian, may apply to metals more generally.
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Affiliation(s)
| | - Akshat Pandey
- Department of Physics, Stanford University, Stanford, CA93405
| | - Ilya Esterlis
- Department of Physics, Harvard University, Cambridge, MA02138
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Zhang YX, Chiu WT, Costa NC, Batrouni GG, Scalettar RT. Charge Order in the Holstein Model on a Honeycomb Lattice. PHYSICAL REVIEW LETTERS 2019; 122:077602. [PMID: 30848616 DOI: 10.1103/physrevlett.122.077602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Indexed: 06/09/2023]
Abstract
The effect of electron-electron interactions on Dirac fermions, and the possibility of an intervening spin-liquid phase between the semimetal and antiferromagnetic (AF) regimes, has been a focus of intense quantum simulation effort over the last five years. We use determinant quantum Monte Carlo simulations to study the Holstein model on a honeycomb lattice and explore the role of electron- phonon interactions on Dirac fermions. We show that they give rise to charge-density-wave (CDW) order and present evidence that this occurs only above a finite critical interaction strength. We evaluate the temperature for the transition into the CDW which, unlike the AF transition, can occur at finite values owing to the discrete nature of the broken symmetry.
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Affiliation(s)
- Y-X Zhang
- Department of Physics, University of California, Davis, California 95616, USA
| | - W-T Chiu
- Department of Physics, University of California, Davis, California 95616, USA
| | - N C Costa
- Instituto de Física, Universidade Federal do Rio de Janeiro Cx.P. 68.528, 21941-972 Rio de Janeiro RJ, Brazil
| | - G G Batrouni
- Université Côte d'Azur, INPHYNI, CNRS, 0600 Nice, France
- MajuLab, CNRS-UCA-SU-NUS-NTU International Joint Research Unit, 117542 Singapore
- Centre for Quantum Technologies, National University of Singapore, 2 Science Drive 3, 117542 Singapore
- Department of Physics, National University of Singapore, 2 Science Drive 3, 117542 Singapore
- Beijing Computational Science Research Center, Beijing 100193, China
| | - R T Scalettar
- Department of Physics, University of California, Davis, California 95616, USA
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Systematic Quantum Cluster Typical Medium Method for the Study of Localization in Strongly Disordered Electronic Systems. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8122401] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Great progress has been made in recent years towards understanding the properties of disordered electronic systems. In part, this is made possible by recent advances in quantum effective medium methods which enable the study of disorder and electron-electronic interactions on equal footing. They include dynamical mean-field theory and the Coherent Potential Approximation, and their cluster extension, the dynamical cluster approximation. Despite their successes, these methods do not enable the first-principles study of the strongly disordered regime, including the effects of electronic localization. The main focus of this review is the recently developed typical medium dynamical cluster approximation for disordered electronic systems. This method has been constructed to capture disorder-induced localization and is based on a mapping of a lattice onto a quantum cluster embedded in an effective typical medium, which is determined self-consistently. Unlike the average effective medium-based methods mentioned above, typical medium-based methods properly capture the states localized by disorder. The typical medium dynamical cluster approximation not only provides the proper order parameter for Anderson localized states, but it can also incorporate the full complexity of Density-Functional Theory (DFT)-derived potentials into the analysis, including the effect of multiple bands, non-local disorder, and electron-electron interactions. After a brief historical review of other numerical methods for disordered systems, we discuss coarse-graining as a unifying principle for the development of translationally invariant quantum cluster methods. Together, the Coherent Potential Approximation, the Dynamical Mean-Field Theory and the Dynamical Cluster Approximation may be viewed as a single class of approximations with a much-needed small parameter of the inverse cluster size which may be used to control the approximation. We then present an overview of various recent applications of the typical medium dynamical cluster approximation to a variety of models and systems, including single and multiband Anderson model, and models with local and off-diagonal disorder. We then present the application of the method to realistic systems in the framework of the DFT and demonstrate that the resulting method can provide a systematic first-principles method validated by experiment and capable of making experimentally relevant predictions. We also discuss the application of the typical medium dynamical cluster approximation to systems with disorder and electron-electron interactions. Most significantly, we show that in the limits of strong disorder and weak interactions treated perturbatively, that the phenomena of 3D localization, including a mobility edge, remains intact. However, the metal-insulator transition is pushed to larger disorder values by the local interactions. We also study the limits of strong disorder and strong interactions capable of producing moment formation and screening, with a non-perturbative local approximation. Here, we find that the Anderson localization quantum phase transition is accompanied by a quantum-critical fan in the energy-disorder phase diagram.
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Richler KD, Fratini S, Ciuchi S, Mayou D. Inhomogeneous dynamical mean-field theory of the small polaron problem. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:465902. [PMID: 30359330 DOI: 10.1088/1361-648x/aae619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present an inhomogeneous dynamical mean field theory (I-DMFT) that is suitable to investigate electron-lattice interactions in non-translationally invariant and/or inhomogeneous systems. The presented approach, whose only assumption is that of a local, site-dependent self-energy, recovers both the exact solution of an electron for a generic random tight-binding Hamiltonian in the non-interacting limit and the DMFT solution for the small polaron problem in translationally invariant systems. To illustrate its full capabilities, we use I-DMFT to study the effects of defects embedded on a two-dimensional surface. The computed maps of the local density of states reveal Friedel oscillations, whose periodicity is determined by the polaron mass. This can be of direct relevance for the interpretation of scanning-tunneling microscopy experiments on systems with sizable electron-lattice interactions. Overall, the easy numerical implementation of the method, yet full self-consistency, allows one to study problems in real-space that were previously difficult to access.
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Affiliation(s)
- Kevin-Davis Richler
- University Grenoble Alpes, Inst NEEL, F-38042 Grenoble, France. CNRS, Inst NEEL, F-38042 Grenoble, France
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Säkkinen N, Peng Y, Appel H, van Leeuwen R. Many-body Green’s function theory for electron-phonon interactions: The Kadanoff-Baym approach to spectral properties of the Holstein dimer. J Chem Phys 2015; 143:234102. [DOI: 10.1063/1.4936143] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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7
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Murakami Y, Werner P, Tsuji N, Aoki H. Supersolid phase accompanied by a quantum critical point in the intermediate coupling regime of the Holstein model. PHYSICAL REVIEW LETTERS 2014; 113:266404. [PMID: 25615362 DOI: 10.1103/physrevlett.113.266404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Indexed: 06/04/2023]
Abstract
We reveal that electron-phonon systems described by the Holstein model on a bipartite lattice exhibit, away from half filling, a supersolid (SS) phase characterized by coexisting charge order (CO) and superconductivity (SC), and an accompanying quantum critical point (QCP). The SS phase, demonstrated by the dynamical mean-field theory with a quantum Monte Carlo impurity solver, emerges in the intermediate-coupling regime, where the peak of the Tc dome is located and the metal-insulator crossover occurs. On the other hand, in the weak- and strong-coupling regimes the CO-SC boundary is of first order with no intervening SS phases. The QCP is associated with the continuous transition from SS to SC and characterized by a reentrant behavior of the SS around it. We further show that the SS-SC transition is hallmarked by diverging charge fluctuations and a kink (peak) in the superfluid density.
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Affiliation(s)
- Yuta Murakami
- Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - Philipp Werner
- Department of Physics, University of Fribourg, 1700 Fribourg, Switzerland
| | - Naoto Tsuji
- Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - Hideo Aoki
- Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033, Japan
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Hoshino S, Kuramoto Y. Superconductivity of composite particles in a two-channel Kondo lattice. PHYSICAL REVIEW LETTERS 2014; 112:167204. [PMID: 24815667 DOI: 10.1103/physrevlett.112.167204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Indexed: 06/03/2023]
Abstract
Emergence of odd-frequency s-wave superconductivity is demonstrated in the two-channel Kondo lattice by means of the dynamical mean-field theory combined with the continuous-time quantum Monte Carlo method. Around half filling of the conduction bands, divergence of an odd-frequency pairing susceptibility is found, which signals instability toward the superconductivity. The corresponding order parameter is equivalent to a staggered composite-pair amplitude with even frequencies, which involves both localized spins and conduction electrons. A model wave function is constructed for the composite order with the use of symmetry operations such as charge conjugation and channel rotations. Given a certain asymmetry of the conduction bands, another s-wave superconductivity is found that has a uniform order parameter. The Kondo effect in the presence of two channels is essential for both types of unconventional superconductivity.
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Affiliation(s)
- Shintaro Hoshino
- Department of Basic Science, The University of Tokyo, Meguro, Tokyo 153-8902, Japan
| | - Yoshio Kuramoto
- Department of Physics, Tohoku University, Sendai, Miyagi 980-8578, Japan
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9
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Turkowski V, Kabir A, Nayyar N, Rahman TS. Dynamical mean-field theory for molecules and nanostructures. J Chem Phys 2012; 136:114108. [DOI: 10.1063/1.3692613] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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10
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Bodensiek O, Zitko R, Peters R, Pruschke T. Low-energy properties of the Kondo lattice model. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:094212. [PMID: 21339565 DOI: 10.1088/0953-8984/23/9/094212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We study the zero-temperature properties of the Kondo lattice model within the dynamical mean-field theory. As an impurity solver we use the numerical renormalization group. We present results for the paramagnetic case showing the anticipated heavy-fermion physics, including direct evidence for the appearance of a large Fermi surface for antiferromagnetic exchange interaction. Allowing for the formation of a Néel state, we observe at finite doping an antiferromagnetic metal below a critical exchange interaction, which shows a crossover from a local moment antiferromagnet with a small Fermi surface for weak exchange coupling to a heavy-fermion antiferromagnet with a large Fermi surface for increasing exchange. Including lattice degrees of freedom via an additional Holstein term we observe a significant suppression of the Kondo effect, leading to a strongly reduced low-energy scale. For too large electron-phonon coupling we find a complete collapse of the heavy Fermi liquid and the formation of polarons.
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Affiliation(s)
- O Bodensiek
- Institute for Theoretical Physics, University of Göttingen, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany
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11
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Turkowski V, Kabir A, Nayyar N, Rahman TS. A DFT + DMFT approach for nanosystems. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2010; 22:462202. [PMID: 21403361 DOI: 10.1088/0953-8984/22/46/462202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We propose a combined density-functional-theory-dynamical-mean-field-theory (DFT + DMFT) approach for reliable inclusion of electron-electron correlation effects in nanosystems. Compared with the widely used DFT + U approach, this method has several advantages, the most important of which is that it takes into account dynamical correlation effects. The formalism is illustrated through different calculations of the magnetic properties of a set of small iron clusters (number of atoms 2 ≤ N ≤ 5). It is shown that the inclusion of dynamical effects leads to a reduction in the cluster magnetization (as compared to results from DFT + U) and that, even for such small clusters, the magnetization values agree well with experimental estimations. These results justify confidence in the ability of the method to accurately describe the magnetic properties of clusters of interest to nanoscience.
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Affiliation(s)
- Volodymyr Turkowski
- Department of Physics, University of Central Florida, Orlando, FL 32816, USA.
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12
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Mishchenko AS. Electron - phonon coupling in underdoped high-temperature superconductors. ACTA ACUST UNITED AC 2009. [DOI: 10.3367/ufnr.0179.200912b.1259] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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13
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Cataudella V, De Filippis G, Mishchenko AS, Nagaosa N. Temperature dependence of the angle resolved photoemission spectra in the undoped cuprates: self-consistent approach to the t-J Holstein model. PHYSICAL REVIEW LETTERS 2007; 99:226402. [PMID: 18233306 DOI: 10.1103/physrevlett.99.226402] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2007] [Indexed: 05/25/2023]
Abstract
We develop a novel self-consistent approach for studying the angle resolved photoemission spectra (ARPES) of a hole in the t-J Holstein model giving perfect agreement with numerically exact diagrammatic Monte Carlo (DMC) data at zero temperature for all regimes of electron-phonon coupling. Generalizing the approach to finite temperatures, we find that the anomalous temperature dependence of the ARPES in undoped cuprates is explained by cooperative interplay of coupling of the hole to magnetic fluctuations and strong electron-phonon interaction.
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Affiliation(s)
- V Cataudella
- Coherentia-CNR-INFM and Dip. di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
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14
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Paci P, Capone M, Cappelluti E, Ciuchi S, Grimaldi C, Pietronero L. Polaronic and nonadiabatic phase diagram from anomalous isotope effects. PHYSICAL REVIEW LETTERS 2005; 94:036406. [PMID: 15698295 DOI: 10.1103/physrevlett.94.036406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2004] [Indexed: 05/24/2023]
Abstract
Isotope effects (IEs) are powerful tools to probe directly the dependence of many physical properties on lattice dynamics. In this Letter we investigate the onset of anomalous IEs in the spinless Holstein model by employing the dynamical mean field theory. We show that the isotope coefficients of the electron effective mass and of the dressed phonon frequency are sizable also far away from the polaronic crossover and mark the importance of nonadiabatic lattice fluctuations. We draw a nonadiabatic phase diagram in which we identify a novel crossover, not related to polaronic features, where the IEs attain their largest anomalies.
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Affiliation(s)
- P Paci
- Dipartimento di Fisica, Università di Roma La Sapienza, and INFM UdR RM1, 00185 Roma, Italy
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15
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Capone M, Ciuchi S. Polaron crossover and bipolaronic metal-insulator transition in the half-filled Holstein model. PHYSICAL REVIEW LETTERS 2003; 91:186405. [PMID: 14611298 DOI: 10.1103/physrevlett.91.186405] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2003] [Indexed: 05/24/2023]
Abstract
The formation of a finite-density polaronic state is analyzed in the context of the Holstein model using the dynamical mean-field theory. The spinless and spinful fermion cases are compared to disentangle the polaron crossover from the bipolaron formation. The exact solution of dynamical mean-field theory is compared with weak-coupling perturbation theory, noncrossing (Migdal), and vertex correction approximations. We show that polaron formation is not associated with a metal-insulator transition, which is instead due to bipolaron formation.
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Affiliation(s)
- M Capone
- Enrico Fermi Center, Rome, Italy
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16
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Biermann S, Aryasetiawan F, Georges A. First-principles approach to the electronic structure of strongly correlated systems: combining the GW approximation and dynamical mean-field theory. PHYSICAL REVIEW LETTERS 2003; 90:086402. [PMID: 12633445 DOI: 10.1103/physrevlett.90.086402] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2002] [Indexed: 05/24/2023]
Abstract
We propose a dynamical mean-field approach for calculating the electronic structure of strongly correlated materials from first principles. The scheme combines the GW method with dynamical mean-field theory, which enables one to treat strong interaction effects. It avoids the conceptual problems inherent to conventional "LDA+DMFT," such as Hubbard interaction parameters and double-counting terms. We apply a simplified version of the approach to the electronic structure of nickel and find encouraging results.
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Affiliation(s)
- S Biermann
- Laboratoire de Physique des Solides, CNRS-UMR 8502, UPS Bâtiment 510, 91405 Orsay, France
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17
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Meyer D, Hewson AC, Bulla R. Gap formation and soft phonon mode in the Holstein model. PHYSICAL REVIEW LETTERS 2002; 89:196401. [PMID: 12443135 DOI: 10.1103/physrevlett.89.196401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2002] [Indexed: 05/24/2023]
Abstract
We investigate electron-phonon coupling in many-electron systems using the dynamical mean-field theory in combination with the numerical renormalization group. This nonperturbative method reveals significant precursor effects to the gap formation at intermediate coupling strengths. The emergence of a soft phonon mode and very strong lattice fluctuations can be understood in terms of Kondo-like physics due to the development of a double-well structure in the effective potential for the ions.
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Affiliation(s)
- D Meyer
- Department of Mathematics, Imperial College, London SW7 2BZ, United Kingdom.
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18
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Keller M, Metzner W, Schollwöck U. Dynamical mean-field theory for pairing and spin gap in the attractive hubbard model. PHYSICAL REVIEW LETTERS 2001; 86:4612-4615. [PMID: 11384296 DOI: 10.1103/physrevlett.86.4612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2000] [Indexed: 05/23/2023]
Abstract
We solve the attractive Hubbard model for arbitrary interaction strengths within dynamical mean-field theory. We compute the transition temperature for superconductivity and analyze electron pairing in the normal phase. The normal state is a Fermi liquid at weak coupling and a non-Fermi-liquid state with a spin gap at strong coupling. Away from half filling, the quasiparticle weight vanishes discontinuously at the transition between the two normal states.
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Affiliation(s)
- M Keller
- Theoretische Physik C, Technische Hochschule Aachen, D-52056 Aachen, Germany
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19
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Han JE, Koch E, Gunnarsson O. Metal-insulator transitions: influence of lattice structure, jahn-teller effect, and Hund's rule coupling. PHYSICAL REVIEW LETTERS 2000; 84:1276-1279. [PMID: 11017497 DOI: 10.1103/physrevlett.84.1276] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/1999] [Indexed: 05/23/2023]
Abstract
We study the influence of the lattice structure, the Jahn-Teller effect, and the Hund's rule coupling on a metal-insulator transition in A(n)C60 (A = K,Rb). The difference in the lattice structure favors A3C60 (fcc) being a metal and A4C60 (bct) being an insulator, and the coupling to H(g) Jahn-Teller phonons favors A4C60 being nonmagnetic. The coupling to H(g) ( A(g)) phonons decreases (increases) the value U(c) of the Coulomb integral at which the metal-insulator transition occurs. There is an important partial cancellation between the Jahn-Teller effect and the Hund's rule coupling.
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Affiliation(s)
- JE Han
- Max-Planck-Institut fur Festkorperforschung, D-70506 Stuttgart, Germany
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20
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Romero AH, Brown DW, Lindenberg K. Converging toward a practical solution of the Holstein molecular crystal model. J Chem Phys 1998. [DOI: 10.1063/1.477305] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Freericks JK, Mahan GD. Strong-coupling expansions for the anharmonic Holstein model and for the Holstein-Hubbard model. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:9372-9384. [PMID: 9984675 DOI: 10.1103/physrevb.54.9372] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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22
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Millis AJ, Mueller R, Shraiman BI. Fermi-liquid-to-polaron crossover. I. General results. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:5389-5404. [PMID: 9986498 DOI: 10.1103/physrevb.54.5389] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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23
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McKenzie RH, Hamer CJ, Murray DW. Quantum Monte Carlo study of the one-dimensional Holstein model of spinless fermions. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:9676-9687. [PMID: 9982524 DOI: 10.1103/physrevb.53.9676] [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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24
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Grimaldi C, Pietronero L, Strässler S. Nonadiabatic superconductivity. II. Generalized Eliashberg equations beyond Migdal's theorem. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:10530-10546. [PMID: 9980107 DOI: 10.1103/physrevb.52.10530] [Citation(s) in RCA: 129] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Freericks JK, Jarrell M. Competition between electron-phonon attraction and weak Coulomb repulsion. PHYSICAL REVIEW LETTERS 1995; 75:2570-2573. [PMID: 10059345 DOI: 10.1103/physrevlett.75.2570] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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26
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Schiller A, Ingersent K. Systematic 1/d corrections to the infinite-dimensional limit of correlated lattice electron models. PHYSICAL REVIEW LETTERS 1995; 75:113-116. [PMID: 10059128 DOI: 10.1103/physrevlett.75.113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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27
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Ulmke M, Janis V, Vollhardt D. Anderson-Hubbard model in infinite dimensions. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:10411-10426. [PMID: 9977736 DOI: 10.1103/physrevb.51.10411] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Freericks JK, Jarrell M. Iterated perturbation theory for the attractive Holstein and Hubbard models. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:6939-6953. [PMID: 9974652 DOI: 10.1103/physrevb.50.6939] [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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Freericks JK. Conserving approximations for the attractive Holstein and Hubbard models. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:403-417. [PMID: 9974557 DOI: 10.1103/physrevb.50.403] [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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Freericks JK, Scalapino DJ. Weak-coupling expansions for the attractive Holstein and Hubbard models. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:6368-6371. [PMID: 10011634 DOI: 10.1103/physrevb.49.6368] [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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