Valence fluctuations and electric reconstruction in the extended Anderson model on the two-dimensional Penrose lattice

Shinichi Takemura, Nayuta Takemori, Akihisa Koga

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We study the extended Anderson model on the two-dimensional Penrose lattice, combining the real-space dynamical mean-field theory with the noncrossing approximation. It is found that the Coulomb repulsion between localized and conduction electrons does not induce a valence transition, but the crossover between the Kondo and mixed valence states is in contrast to the conventional periodic system. In the mixed-valence region close to the crossover, nontrivial valence distributions appear, characteristic of the Penrose lattice, demonstrating that the mixed-valence state coexists with local Kondo states in certain sites. The electric reconstruction in the mixed valence region is also addressed.

Original languageEnglish
Article number165114
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number16
DOIs
Publication statusPublished - Apr 9 2015
Externally publishedYes

Fingerprint

Mean field theory
Time varying systems
Electron transitions
valence
Electrons
crossovers
conduction electrons
approximation
electrons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Valence fluctuations and electric reconstruction in the extended Anderson model on the two-dimensional Penrose lattice. / Takemura, Shinichi; Takemori, Nayuta; Koga, Akihisa.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 91, No. 16, 165114, 09.04.2015.

Research output: Contribution to journalArticle

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