Effect of the Orbital Level Difference in Doped Spin-1 Chains

Beat Ammon*, Masatoshi Imada

*この研究の対応する著者

研究成果: Article査読

4 被引用数 (Scopus)

抄録

The doping of a two-orbital chain with mobile S = 1/2 fermions and strong Hund's rule couplings stabilizing the S = 1 spins strongly depends on the presence of a level difference among these orbitals. Using density matrix renormalization group (DMRG) methods, we find a finite spin gap upon doping and dominant pairing correlations without level difference, whereas the presence of a level difference leads to dominant charge density wave (CDW) correlations with gapless spin-excitations. The string correlation function also shows qualitative differences between the two models.

本文言語English
ページ(範囲)1946-1949
ページ数4
ジャーナルjournal of the physical society of japan
69
7
DOI
出版ステータスPublished - 2000 7月
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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