Energy-gap structure of layered superconductors
S. H. Liu, R. A. Klemm
DOI 10.1103/PhysRevB.48.10650 · Physical Review B
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Abstract
We have analyzed the energy gaps and density of states (DOS) of layered superconductors with two inequivalent layers in a unit cell in the c-axis direction. In the physically interesting parameter range where the interlayer hopping strengths of the quasiparticles are comparable to the critical temperature, the DOS curves have a double-peak structure, where the extra peaks are manifestations of interband pairing. Unlike BCS superconductors, the peaks are logarithmic singularities. Our simulated tunneling characteristics bear close resemblance to experimental results.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (BEDT-TTF)2Cu(NCS)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 11 | Pressure not reported | unknown |
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