Asymmetry in the normal-metal to high-Tc superconductor tunnel junction
Karsten Flensberg, Per Hedegård, Michael Brix
DOI 10.1103/PhysRevB.38.841 · Physical Review B
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Abstract
We show that the observed asymmetry in the I−V characteristics of high-Tc material to normal-metal junctions can be explained within the resonating-valence-bond model. For a bias current with electrons moving from the superconductor to the normal metal, the current is quadratic in the bias voltage, and in the opposite case, with electrons moving from the normal metal to the superconductor, the current is linear in V.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.85Sro.15CuO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O 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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