Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Macroscopic fluctuations in the boundary resistance of metal-superconductor interfaces
AU - Lambert, Colin
AU - Robinson, S. J.
PY - 1993/10/1
Y1 - 1993/10/1
N2 - We examine the possibility of macroscopic fluctuations in the electrical resistance R of a disordered mesoscopic superconductor. A Perturbative argument shows that in the presence of phase fluctuations, quantum interference can cause the Andreev scattering amplitude to vanish, leading to a 1/R2 tail in the probability distribution for R. Consequently no moments exist and the boundary resistance exhibits large fluctuations. This prediction is confirmed by numerical simulations on superconducting loops, connected to external reservoirs by point contacts.
AB - We examine the possibility of macroscopic fluctuations in the electrical resistance R of a disordered mesoscopic superconductor. A Perturbative argument shows that in the presence of phase fluctuations, quantum interference can cause the Andreev scattering amplitude to vanish, leading to a 1/R2 tail in the probability distribution for R. Consequently no moments exist and the boundary resistance exhibits large fluctuations. This prediction is confirmed by numerical simulations on superconducting loops, connected to external reservoirs by point contacts.
U2 - 10.1103/PhysRevB.48.10391
DO - 10.1103/PhysRevB.48.10391
M3 - Journal article
VL - 48
SP - 10391
EP - 10394
JO - Physical review B
JF - Physical review B
SN - 0163-1829
IS - 14
ER -