Dephasing of Cooper pairs and subgap electron transport in superconducting hybrids
Journal article, 2012

We argue that electron-electron interactions fundamentally restrict the penetration length of Cooper pairs into a diffusive normal metal (N) from a superconductor (S). At low temperatures, this Cooper pair dephasing length L-phi remains finite and does not diverge at T -> 0. We evaluate the subgap conductance of NS hybrids in the presence of electron-electron interactions and demonstrate that this length L-phi can be directly extracted from conductance measurements in such structures.

conductivity

weak-localization

quantum decoherence

junctions

Author

A. G. Semenov

A. D. Zaikin

Leonid Kuzmin

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 86 14

Subject Categories

Physical Sciences

DOI

10.1103/PhysRevB.86.144529

More information

Created

10/6/2017