Time-Resolved Measurements of Thermodynamic Fluctuations of the Particle Number in a Nondegenerate Fermi Gas
Journal Article
·
· Physical Review Letters
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.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40277373
- Journal Information:
- Physical Review Letters, Vol. 87, Issue 6; Other Information: DOI: 10.1103/PhysRevLett.87.067004; Othernumber: PRLTAO000087000006067004000001; 021132PRL; PBD: 6 Aug 2001; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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