Large Fermi surface of the one-dimensional Kondo lattice model observed by Friedel oscillations

Naokazu Shibata, Kazuo Ueda, Tomotoshi Nishino, Chikara Ishii

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The paramagnetic metallic phase of the one-dimensional Kondo lattice model is studied by the density matrix renormalization group method. We calculate spin excitation gap and Friedel oscillations in finite systems. The finite size corrections of the spin gap and the long-range Friedel oscillations are consistent with a Tomonaga-Luttinger liquid. The Friedel oscillations reflect the charge-charge and spin-spin correlation functions. From the period of the Friedel oscillations, it is concluded that the Fermi surface is large including both the conduction electrons and the localized spins, kF = π(1+nc)/2 where nc is the density of conduction electrons.

Original languageEnglish
Pages (from-to)1024-1027
Number of pages4
JournalPhysica B: Condensed Matter
Volume230-232
DOIs
Publication statusPublished - 1997 Feb
Externally publishedYes

Keywords

  • Fermi surface
  • Luttinger liquid

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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