Dephasing of Cooper pairs and subgap electron transport in superconducting hybrids
Artikel i vetenskaplig tidskrift, 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

Författare

A. G. Semenov

A. D. Zaikin

Leonid Kuzmin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 86 14

Ämneskategorier

Fysik

DOI

10.1103/PhysRevB.86.144529

Mer information

Skapat

2017-10-06