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Unconventional superconductivity on the triangular lattice Hubbard model

โœ Scribed by Chen, Kuang Shing; Meng, Zi Yang; Yu, Unjong; Yang, Shuxiang; Jarrell, Mark; Moreno, Juana

Book ID
120812256
Publisher
The American Physical Society
Year
2013
Tongue
English
Weight
940 KB
Volume
88
Category
Article
ISSN
1098-0121

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โœ Kenji Kobayashi; Hisatoshi Yokoyama ๐Ÿ“‚ Article ๐Ÿ“… 2006 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 194 KB

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 +