Superconductivity and Magnetism in Quasi-One-Dimensional Two-Band Systems.
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- Yonemitsu K.
- Institute for Molecular Science
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- Kishine J.
- Institute for Molecular Science
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- Ogawa T.
- Institute for Molecular Science
Bibliographic Information
- Other Title
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- Superconductivity and Magnetism in Quas
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Abstract
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.
Journal
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- The Review of High Pressure Science and Technology
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The Review of High Pressure Science and Technology 7 490-492, 1998
The Japan Society of High Pressure Science and Technology
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Details 詳細情報について
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- CRID
- 1390001204382552960
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- NII Article ID
- 10002690702
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- NII Book ID
- AN10452913
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- ISSN
- 13481940
- 0917639X
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- NDL BIB ID
- 4493958
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed