Stripe formation in repulsive 4-leg Hubbard ladder: Directly-extended DMRG studies

M. Machida, S. Yamada, M. Okumura, Y. Ohashi, H. Matsumoto

研究成果: Article査読

1 被引用数 (Scopus)

抄録

In order to study the ground state of the Hubbard model from a slightly doped region to an over-doped one, we directly apply the density renormalization group method to 4-leg × 20-ladder repulsive Hubbard model and calculate hole distribution profiles with changing the on-site repulsion U / t from 0 to 15 and the doping ratio from 0.025 to 0.250. The calculation results in the underdoped range reveal that various stripe structures formed by doped holes merge or separate depending on U / t and the doping ratio. We suggest that these rich features are relevant to modulated hole distributions as experimentally observed in underdoped high-Tc superconductors.

本文言語English
ページ(範囲)1141-1144
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
468
15-20
DOI
出版ステータスPublished - 2008 9月 15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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