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cond-mat.str-el2004
Competition between singlet and triplet pairings in Na_xCoO_2 yH_2O
Kazuhiko Kuroki, Yukio Tanaka, Ryotaro Arita
We discuss the pairing symmetry of a cobaltate superconductor NaCoO HO by adopting an effective single band model that takes into account the hole pockets…
cond-mat.str-el2004
A new numerical algorithm for the double-orbital Hubbard model -- Hund-coupled pairing symmetry in the doped case
Shiro Sakai, Ryotaro Arita, Hideo Aoki
In order to numerically study electron correlation effects in multi-orbital systems, we propose a new type of discrete transformation for the exchange (Hund's coupling) and pair-ho…
cond-mat.str-el2004
Off-site-repulsion induced Triplet Superconductivity: a possibility of chiral p pairing in SrRuO
Ryotaro Arita, Seiichiro Onari, Kazuhiko Kuroki +1
In order to probe the effect of charge fluctuations on triplet pairing, we study the pairing symmetry in the one-band Hubbard model having the off-site Coulomb repulsion () on t…