Zero-bias conductance peak splitting due to multiband effect in tunneling spectroscopy of organic superconductors
Y. Tanuma, K. Kuroki, Y. Tanaka, S. Kashiwaya
DOI 10.1103/PhysRevB.68.214513 · Physical Review B
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Abstract
We study how the multiplicity of the Fermi surface affects the zero-bias peak in conductance spectra of tunneling spectroscopy. As case studies, we consider models for organic superconductors κ−(BEDT−TTF)2Cu(NCS)2 and (TMTSF)2ClO4. We find that the multiplicity of the Fermi surfaces can lead to a splitting of the zero-bias conductance peak (ZBCP). We propose that the presence/absence of the ZBCP splitting is used as a probe to distinguish the pairing symmetry in κ−(BEDT−TTF)2Cu(NCS)2.
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. | — | Pressure not reported | unknown |
| (TMTSF)2ClO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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