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Time-resolved measurements of thermodynamic fluctuations of the particle number in a nondegenerate Fermi gas | | C M Wilson
; L Frunzio
; D E Prober
; | | Date: |
6 Aug 2001 | | Journal: | Phys Rev Lett, 87 (6), 067004 | | 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(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. | | Source: | PubMed, pmid11497846 | | Services: | Forum | Review | Favorites | |
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