Superconductivity and Magnetism in Quasi-One-Dimensional Two-Band Systems.

• Yonemitsu K.

  Institute for Molecular Science

• Kishine J.

  Institute for Molecular Science

• Ogawa T.

  Institute for Molecular Science

書誌事項

タイトル別名

• Superconductivity and Magnetism in Quas

抄録

We study crossovers from one to quasi-one dimensions in doped two-leg ladder systems, using a renormalization group method. When quasi-one dimensionality is regarded as controlled by incomplete interference between the Cooper and Peierls channels, we obtain spin-density wave, d-wave superconductor, and metallic phases with decreasing dominance of the Peierls channel. When transverse single-particle hopping is treated perturbationally, we obtain a one-particle crossover from incoherent to coherent transverse motion for weak interaction and a two-particle crossover from short- to long-range ordering of a d-wave superconductor for strong interaction. We also study a magnetic property in a doped Heisenberg-Kondo chain, using the exact diagonalization method. A fully saturated ferromagnetism in the ferromagnetic Kondo chain is destroyed by rather weak antiferromagnetic Heisenberg coupling between localized S=1/2 spins.

収録刊行物

• 高圧力の科学と技術

  高圧力の科学と技術 7 490-492, 1998

  日本高圧力学会

キーワード

• doped ladder
• pair tunneling
• dimensional crossover
• Heisenberg-Kondo lattice
• ferromagnetic Kondo model

詳細情報

• CRID: 1390001204382552960
• NII論文ID: 10002690702
• NII書誌ID: AN10452913
• DOI: 10.4131/jshpreview.7.490
• ISSN: 13481940
• ISSN: 0917639X
• NDL書誌ID: 4493958
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4493958
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可