Reentrance effect in normal-metal/superconducting hybrid loops
C.-J. Chien, V. Chandrasekhar
DOI 10.1103/PhysRevB.60.15356 · Physical Review B
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Abstract
We have measured the transport properties of two mesoscopic hybrid loops composed of a normal-metal arm and a superconducting arm. The samples differed in the transmittance of the normal/superconducting interfaces. While the low-transmittance sample showed monotonic behavior in the low-temperature resistance, magnetoresistance, and differential resistance, the high-transmittance sample showed reentrant behavior in all three measurements. This reentrant behavior is due to coherent Andreev reflection at the normal/superconducting interfaces. We compare the reentrance effect for the three different measurements and discuss the results based on the theory of quasiclassical Green’s functions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al 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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