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Addendum to ''Quasiparticle branch mixing rates in superconducting aluminum''

Journal Article · · Phys. Rev., B: Condens. Matter; (United States)
The quasiparticle charge distribution generated in a superconductor by tunnel injection from a normal metal is computed as a function of temperature and injection voltage. The low-voltage limiting form is compared with the distributions obtained from the Tinkham-Clarke and Pethick-Smith chemical potential models. The quasiparticle charge relaxation rate tau/sup -1//sub Q/* due to inelastic scattering is computed for temperatures between 0.3T/sub c/ and 0.9999T/sub c/, and for injection voltages between 0.01..delta.. (T)/e and 20..delta.. (T)/e. The limit T ..-->.. T/sub c/ yields the voltage-independent Schmid-Schoen and Pethick-Smith result tau/sup -1//sub Q/*=..pi..tau/sup -1//sub E/=0(T/sub c/) ..delta.. (T)/4k/sub B/T, where tau/sup -1//sub E/=0(T/sub c/) is the inelastic scattering rate at the Fermi energy and at T/sub c/. At temperatures below T/sub c/, both the steady-state distribution function and tau/sup -1//sub Q/* depend on the injection voltage.
Research Organization:
Department of Physics, University of California, Berkeley, California 94720
OSTI ID:
5747333
Journal Information:
Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 21:1; ISSN PRBMD
Country of Publication:
United States
Language:
English