Real-time simulations of nonequilibrium transport in the single-impurity Anderson model

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.79.235336· OSTI ID:961779

Heidrich-Meisner, F. ^[1]; Feiguin, Adrian E ^[2]; Feiguin, A. E. ^[3]; Dagotto, Elbio R ^[2]

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1. Institut fur Physikalische Chemie der RWTH
2. ORNL
3. University of Maryland

One of the main open problems in the field of transport in strongly interacting nanostructures is the understanding of currents beyond the linear response regime. In this work, we consider the single-impurity Anderson model and use the adaptive time-dependent density matrix renormalization group method to compute real-time currents out of equilibrium. We first focus on the particle-hole symmetric point where Kondo correlations are the strongest and then extend the study of the nonequilibrium transport to the mixed-valence regime. As a main result, we present accurate data for the current-voltage characteristics of this model.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 961779
• Journal Information: Physical Review B, Vol. 79, Issue 23; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CORRELATIONS
CURRENTS
DATA
DENSITY MATRIX
EQUILIBRIUM
KONDO EFFECT
NANOSTRUCTURES
RENORMALIZATION
TRANSPORT