Thumbnail
Access Restriction
Open

Author Wilson, C. M. ♦ Frunzio, L. ♦ Prober, D. E.
Sponsorship (US)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The American Physical Society
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ EXCITATION ♦ FERMI GAS ♦ FLUCTUATIONS ♦ FREQUENCY DEPENDENCE ♦ RECOMBINATION ♦ THERMODYNAMICS ♦ TUNNELING
Abstract We report on time-resolved measurements of thermodynamic fluctuations in the number of particles in a nondegenerate Fermi gas. The gas is comprised of thermal quasiparticles, confined in a superconducting Al box by large-gap Ta leads. The average number of quasiparticles is about 10{sup 5} . This number fluctuates due to quasiparticle generation and recombination. The number is measured from the tunneling current through a barrier that bisects the box. The recombination time is independently measured by single-photon excitation and agrees with the frequency dependence of the fluctuations.
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 2001-08-06
Publisher Place United States
Journal Physical Review Letters
Volume Number 87
Issue Number 6


Open content in new tab

   Open content in new tab