Evolution of a large fermi surface in the kondo lattice

Junya Otsuki, Hiroaki Kusunose, Yoshio Kuramoto

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

The single-particle spectrum of the Kondo lattice model is derived with the use of the continuous-time quantum Monte Carlo method, combined with the dynamical mean-field theory. Crossover behavior is traced quantitatively either to a heavy Fermi-liquid state or to a magnetically ordered state from the local-moment state at high temperatures. The momentum distribution in the low-temperature limit acquires a discontinuity at the location that involves the local-spin degrees of freedom. Even without the charge degrees of freedom for local electrons, the excitation spectra exhibit hybridized bands similar to those in the Anderson lattice. Temperature dependence in the zero-energy component of the self-energy is crucial in forming the Fermi-liquid state with the large Fermi surface.

Original languageEnglish
Article number017202
JournalPhysical Review Letters
Volume102
Issue number1
DOIs
Publication statusPublished - Jan 5 2009
Externally publishedYes

Fingerprint

Fermi liquids
Fermi surfaces
degrees of freedom
Monte Carlo method
crossovers
discontinuity
moments
momentum
temperature dependence
energy
excitation
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Evolution of a large fermi surface in the kondo lattice. / Otsuki, Junya; Kusunose, Hiroaki; Kuramoto, Yoshio.

In: Physical Review Letters, Vol. 102, No. 1, 017202, 05.01.2009.

Research output: Contribution to journalArticle

Otsuki, Junya ; Kusunose, Hiroaki ; Kuramoto, Yoshio. / Evolution of a large fermi surface in the kondo lattice. In: Physical Review Letters. 2009 ; Vol. 102, No. 1.
@article{c47708bd622343c59734bdeceef33aa1,
title = "Evolution of a large fermi surface in the kondo lattice",
abstract = "The single-particle spectrum of the Kondo lattice model is derived with the use of the continuous-time quantum Monte Carlo method, combined with the dynamical mean-field theory. Crossover behavior is traced quantitatively either to a heavy Fermi-liquid state or to a magnetically ordered state from the local-moment state at high temperatures. The momentum distribution in the low-temperature limit acquires a discontinuity at the location that involves the local-spin degrees of freedom. Even without the charge degrees of freedom for local electrons, the excitation spectra exhibit hybridized bands similar to those in the Anderson lattice. Temperature dependence in the zero-energy component of the self-energy is crucial in forming the Fermi-liquid state with the large Fermi surface.",
author = "Junya Otsuki and Hiroaki Kusunose and Yoshio Kuramoto",
year = "2009",
month = "1",
day = "5",
doi = "10.1103/PhysRevLett.102.017202",
language = "English",
volume = "102",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "1",

}

TY - JOUR

T1 - Evolution of a large fermi surface in the kondo lattice

AU - Otsuki, Junya

AU - Kusunose, Hiroaki

AU - Kuramoto, Yoshio

PY - 2009/1/5

Y1 - 2009/1/5

N2 - The single-particle spectrum of the Kondo lattice model is derived with the use of the continuous-time quantum Monte Carlo method, combined with the dynamical mean-field theory. Crossover behavior is traced quantitatively either to a heavy Fermi-liquid state or to a magnetically ordered state from the local-moment state at high temperatures. The momentum distribution in the low-temperature limit acquires a discontinuity at the location that involves the local-spin degrees of freedom. Even without the charge degrees of freedom for local electrons, the excitation spectra exhibit hybridized bands similar to those in the Anderson lattice. Temperature dependence in the zero-energy component of the self-energy is crucial in forming the Fermi-liquid state with the large Fermi surface.

AB - The single-particle spectrum of the Kondo lattice model is derived with the use of the continuous-time quantum Monte Carlo method, combined with the dynamical mean-field theory. Crossover behavior is traced quantitatively either to a heavy Fermi-liquid state or to a magnetically ordered state from the local-moment state at high temperatures. The momentum distribution in the low-temperature limit acquires a discontinuity at the location that involves the local-spin degrees of freedom. Even without the charge degrees of freedom for local electrons, the excitation spectra exhibit hybridized bands similar to those in the Anderson lattice. Temperature dependence in the zero-energy component of the self-energy is crucial in forming the Fermi-liquid state with the large Fermi surface.

UR - http://www.scopus.com/inward/record.url?scp=58849156089&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58849156089&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.102.017202

DO - 10.1103/PhysRevLett.102.017202

M3 - Article

AN - SCOPUS:58849156089

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 1

M1 - 017202

ER -