SUPERCONDUCTIVITY IN THE t-J MODEL
Плакида · Condensed Matter Physics · 2002
A comparison of microscopic theories for superconductivity in the limit of strong electron correlations is presented.We consider the results for the two-dimensional t-J model obtained within a projection technique for the Green functions in terms of the Hubbard operators and a slave-fermion representation for the RVB state.It is argued that the latter approach resulting in an odd-symmetry p-wave pairing for fermions is inadequate.