Gg. Melkonian et Sg. Rubin, TUNNELING BETWEEN A BIPOLARON SUPERCONDUCTOR AND A NORMAL-METAL, Physical review. B, Condensed matter, 57(17), 1998, pp. 10867-10872
We show in this paper that the bipolaron theory is able to describe th
e main features of tunnel experiments. This theory explains the experi
mental value of a gap, a form of peaks at low bias voltage, and a diff
erent value of an asymmetry in different tunnel experiments. The tempe
rature variation of the gap width was obtained as well. [S0163-1829(98
)06513-8].