Two-bands superconductivity with intra- and interband pairing for synthetic superlattices

Details Two-bands superconductivity with intra- and interband pairing for synthetic superlattices Two-bands superconductivity with intra- and interband pairing for synthetic superlattices

2010-12-15

arxiv.org/abs/1012.3417v1

Physics

Condensed Matter

Superconductivity

6 pages, 2 figures

Scientific paper

10.1007/s10948-010-1112-2

We consider a model for superconductivity in a two-band superconductor, having an anisotropic electronic structure made of two partially overlapping bands with a first hole-like and a second electron-like fermi surface. In this pairing scenario, driven by the interplay between interband $V_{i,j}$ and intraband $V_{i,i}$ pairing terms, we have solved the two gap equations at the critical temperature $T = T_c$ and calculate $T_c$ and the chemical potential $\mu$ as a function of the number of carriers $n$ for various values of pairing interactions, $V_{1,1}$, $V_{2,2}$, and $V_{1,2}$. The results show the complexity of the physics of condensates with multiple order parameters with the chemical potential near band edges.

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