Low-energy quasiparticle transport through Andreev levels
A. Kadigrobov, L. Y. Gorelik, R. I. Shekhter, M. Jonson, R. Sh. Shaikhaidarov, V. T. Petrashov, P. Delsing, T. Claeson
DOI 10.1103/PhysRevB.60.14589 · Physical Review B
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Abstract
We measure the resistance of a normal mesoscopic sample with two superconducting mirrors and find two regimes with qualitatively different behavior. At temperatures below 90 mK peaks in the conductance were found when the phase difference between the two superconductors is an odd multiple of π. The peak heights increase with decreasing temperature. Above 100 mK the observed peaks give way to dips in the conductance. While the high-temperature behavior can be explained in terms of the thermal effect [Phys. Rev. Lett. 76, 823 (1996)], we propose that the low-temperature behavior is a manifestation of resonant transmission of low-energy quasiparticles through Andreev states.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ag Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| 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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