Paramagnon-Mediatedd-Wave Pairing in Two-Dimensional Isotropic Fermi Liquid
Yoshifumi Onishi, Kazumasa Miyake
It is studied which type of superfluidity is induced by the paramagnon-mediated interaction in a two-dimensional isotropic Fermion system. The stability of various types of Cooper pairing is investigated in the framework of strong coupling theory on the basis of the RPA treatment for spin fluctuations. It is shown that the d -wave pairing is the most likely possibility in the two-dimensional isotropic Fermi system with short-range repulsive interaction. This is in marked contrast with the three-dimensional case where the triplet p -wave pairing is stabilized, and gives a prediction for a possible type of superfluidity of 3 He adsorbed on the flat graphite surface.
Journal of the Physical Society of Japan•Dec 15, 1999•4 citations