Origin of zero-bias conductance peaks in high-Tc superconductors
Satoshi Kashiwaya, Yukio Tanaka, Masao Koyanagi, Hiroshi Takashima, Koji Kajimura
DOI 10.1103/PhysRevB.51.1350 · Physical Review B
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Abstract
A wide variety of experimental conductance spectra in high-Tc superconductors can be explained by a theory of proximity-electron-tunneling spectroscopy (PETS) for d-wave superconductors. From a solution of the Bogoliubov–de Gennes equation, the conductance spectra of the PETS are proved to show gap or zero-bias peak structures depending on the axis orientation of the superconductor. The features of the calculated spectra are consistent with the experimental results of YBa2Cu3O7−δ observed by low-temperature scanning tunneling spectroscopy.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ 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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