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

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

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1141-1144
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume468
Issue number15-20
DOIs
Publication statusPublished - 2008 Sep 15

Fingerprint

hole distribution
Hubbard model
Ladders
ladders
Doping (additives)
renormalization group methods
Ground state
Superconducting materials
ground state
profiles

Keywords

  • Density-matrix renormalization group
  • High-T superconductors
  • Hubbard model
  • Stripe

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Stripe formation in repulsive 4-leg Hubbard ladder : Directly-extended DMRG studies. / Machida, M.; Yamada, S.; Okumura, M.; Ohashi, Yoji; Matsumoto, H.

In: Physica C: Superconductivity and its Applications, Vol. 468, No. 15-20, 15.09.2008, p. 1141-1144.

Research output: Contribution to journalArticle

Machida, M. ; Yamada, S. ; Okumura, M. ; Ohashi, Yoji ; Matsumoto, H. / Stripe formation in repulsive 4-leg Hubbard ladder : Directly-extended DMRG studies. In: Physica C: Superconductivity and its Applications. 2008 ; Vol. 468, No. 15-20. pp. 1141-1144.
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