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Spin-triplet superconductivity in two-dimensional Hubbard model on triangular lattice

โœ Scribed by Yunori Nisikawa; Kosaku Yamada


Book ID
108464345
Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
99 KB
Volume
388-389
Category
Article
ISSN
0921-4534

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As a model of the novel superconductor Na x CoO 2 AE yH 2 O, we study a triangular Hubbard model with doubly degenerate atomic orbitals, using an optimization variational Monte Carlo method. It is found that when the isolated Fermi surface overlaps the van Hove singularity points, d x 2 ร€y 2 and d +