Green's Functions from Real-Time Bold-Line Monte Carlo Calculations: Spectral Properties of the Nonequilibrium Anderson Impurity Model

被引：89

作者：

Cohen, Guy ^{[1
,2
]}

Gull, Emanuel ^{[3
]}

Reichman, David R. ^{[1
]}

Millis, Andrew J. ^{[2
]}

机构：

[1] Columbia Univ, Dept Chem, New York, NY 10027 USA

[2] Columbia Univ, Dept Phys, New York, NY 10027 USA

[3] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 14期

基金：

美国国家科学基金会;

关键词：

MEAN-FIELD THEORY; TRANSPORT; ATOM;

D O I：

10.1103/PhysRevLett.112.146802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The nonequilibrium spectral properties of the Anderson impurity model with a chemical potential bias are investigated within a numerically exact real-time quantum Monte Carlo formalism. The two-time correlation function is computed in a form suitable for nonequilibrium dynamical mean field calculations. Additionally, the evolution of the model's spectral properties are simulated in an alternative representation, defined by a hypothetical but experimentally realizable weakly coupled auxiliary lead. The voltage splitting of the Kondo peak is confirmed and the dynamics of its formation after a coupling or gate quench are studied. This representation is shown to contain additional information about the dot's population dynamics. Further, we show that the voltage-dependent differential conductance gives a reasonable qualitative estimate of the equilibrium spectral function, but significant qualitative differences are found including incorrect trends and spurious temperature dependent effects.

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页数：5

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共 47 条

[1] LOCALIZED MAGNETIC STATES IN METALS [J].

ANDERSON, PW .

PHYSICAL REVIEW, 1961, 124 (01) :41-&

[2] Nonequilibrium Dynamical Mean-Field Theory: An Auxiliary Quantum Master Equation Approach [J].

Arrigoni, Enrico ;

Knap, Michael ;

von der Linden, Wolfgang .

PHYSICAL REVIEW LETTERS, 2013, 110 (08)

[3] The ALPS project release 2.0: open source software for strongly correlated systems [J].

Bauer, B. ;

Carr, L. D. ;

Evertz, H. G. ;

Feiguin, A. ;

Freire, J. ;

Fuchs, S. ;

Gamper, L. ;

Gukelberger, J. ;

Gull, E. ;

Guertler, S. ;

Hehn, A. ;

Igarashi, R. ;

Isakov, S. V. ;

Koop, D. ;

Ma, P. N. ;

Mates, P. ;

Matsuo, H. ;

Parcollet, O. ;

Pawlowski, G. ;

Picon, J. D. ;

Pollet, L. ;

Santos, E. ;

Scarola, V. W. ;

Schollwoeck, U. ;

Silva, C. ;

Surer, B. ;

Todo, S. ;

Trebst, S. ;

Troyer, M. ;

Wall, M. L. ;

Werner, P. ;

Wessel, S. .

JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, 2011,

[4] Green's functions from real-time bold-line Monte Carlo [J].

Cohen, Guy ;

Reichman, David R. ;

Millis, Andrew J. ;

Gull, Emanuel .

PHYSICAL REVIEW B, 2014, 89 (11)

[5] Generalized projected dynamics for non-system observables of non-equilibrium quantum impurity models [J].

Cohen, Guy ;

Wilner, Eli Y. ;

Rabani, Eran .

NEW JOURNAL OF PHYSICS, 2013, 15

[6] Numerically exact long-time magnetization dynamics at the nonequilibrium Kondo crossover of the Anderson impurity model [J].

Cohen, Guy ;

Gull, Emanuel ;

Reichman, David R. ;

Millis, Andrew J. ;

Rabani, Eran .

PHYSICAL REVIEW B, 2013, 87 (19)

[7] Memory effects in nonequilibrium quantum impurity models [J].

Cohen, Guy ;

Rabani, Eran .

PHYSICAL REVIEW B, 2011, 84 (07)

[8] TRANSPORT-COEFFICIENTS OF THE ANDERSON MODEL VIA THE NUMERICAL RENORMALIZATION-GROUP [J].

COSTI, TA ;

HEWSON, AC ;

ZLATIC, V .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 (13) :2519-2558

[9] Out-of-equilibrium Kondo effect in a mesoscopic device [J].

De Franceschi, S ;

Hanson, R ;

van der Wiel, WG ;

Elzerman, JM ;

Wijpkema, JJ ;

Fujisawa, T ;

Tarucha, S ;

Kouwenhoven, LP .

PHYSICAL REVIEW LETTERS, 2002, 89 (15) :156801/1-156801/4

[10] Extracting spectral properties from Keldysh Green functions [J].

Dirks, Andreas ;

Eckstein, Martin ;

Pruschke, Thomas ;

Werner, Philipp .

PHYSICAL REVIEW E, 2013, 87 (02)

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