Journal of Experimental and Theoretical Physics
HOME | SEARCH | AUTHORS | HELP      
Journal Issues
Golden Pages
About This journal
Aims and Scope
Editorial Board
Manuscript Submission
Guidelines for Authors
Manuscript Status
Contacts


ZhETF, Vol. 146, No. 6, p. 1176 (December 2014)
(English translation - JETP, Vol. 119, No. 6, p. 1028, December 2014 available online at www.springer.com )

SHOOTING QUASIPARTICLES FROM ANDREEV BOUND STATES IN A SUPERCONDUCTING CONSTRICTION
Riwar R.P., Houzet M., Meyer J., Nazarov Yu.V.

Received: May 19, 2014

DOI: 10.7868/S0044451014120037

DJVU (98.2K) PDF (267.2K)

A few-channel superconducting constriction provides a set of discrete Andreev bound states that may be populated with quasiparticles. Motivated by recent experimental research, we study the processes in an a.c. driven constriction whereby a quasiparticle is promoted to the delocalized states outside the superconducting gap and flies away. We distinguish two processes of this kind. In the process of ionization, a quasiparticle present in the Andreev bound state is transferred to the delocalized states leaving the constriction. The refill process involves two quasiparticles: one flies away while another one appears in the Andreev bound state. We notice an interesting asymmetry of these processes. The electron-like quasiparticles are predominantly emitted to one side of the constriction while the hole-like ones are emitted to the other side. This produces a charge imbalance of accumulated quasiparticles, that is opposite on opposite sides of the junction. The imbalance may be detected with a tunnel contact to a normal metal lead. Contribution for the JETP special issue in honor of A. F. Andreev's 75th birthday

 
Report problems