TY - JOUR
T1 - Effect of inter-band nesting on superconductivity in stacked honeycomb lattices
AU - Onari, Seiichiro
AU - Kuroki, Kazuhiko
AU - Arita, Ryotaro
AU - Aoki, Hideo
N1 - Funding Information:
Numerical calculations were performed at the Computer Center and the ISSP Supercomputer Center of the University of Tokyo. This study is in part supported by a Grant-in-aid for Scientific Research from the Ministry of Education of Japan.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2003/5
Y1 - 2003/5
N2 - In order to exemplify our idea that inter-band nesting can favor superconductivity arising electron repulsion in layered, non-Bravais lattices, we have looked into the two-band Hubbard model on a stack of honeycomb lattices with the fluctuation exchange approximation. By systematically varying the band filling and transfers, the inter-band nesting is indeed found to give rise to gap functions that change sign across the bands, with a time-reversal-broken di + id2 intra-band pairing symmetry.
AB - In order to exemplify our idea that inter-band nesting can favor superconductivity arising electron repulsion in layered, non-Bravais lattices, we have looked into the two-band Hubbard model on a stack of honeycomb lattices with the fluctuation exchange approximation. By systematically varying the band filling and transfers, the inter-band nesting is indeed found to give rise to gap functions that change sign across the bands, with a time-reversal-broken di + id2 intra-band pairing symmetry.
KW - Electron correlation
KW - Hubbard model
KW - Superconductivity
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U2 - 10.1016/S0921-4526(02)02365-7
DO - 10.1016/S0921-4526(02)02365-7
M3 - Article
AN - SCOPUS:23044492019
VL - 329-333
SP - 1437
EP - 1439
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - II
ER -