Charge order in a two-dimensional kondo lattice model

Takahiro Misawa*, Junki Yoshitake, Yukitoshi Motome

*この研究の対応する著者

研究成果: Article査読

21 被引用数 (Scopus)

抄録

The possibility of charge order is theoretically examined for the Kondo lattice model in two dimensions, which does not include bare repulsive interactions. Using two complementary numerical methods, we find that charge order appears at quarter filling in an intermediate Kondo coupling region. The charge ordered ground state is an insulator exhibiting an antiferromagnetic order at charge-poor sites, while the paramagnetic charge-ordered state at finite temperatures is metallic with pseudogap behavior. We confirm that the stability of charge order is closely related with the local Kondo-singlet formation at charge-rich sites. Our results settle the controversy on charge order in the Kondo lattice model in realistic spatial dimensions.

本文言語English
論文番号246401
ジャーナルPhysical Review Letters
110
24
DOI
出版ステータスPublished - 2013 6月 11
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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