This article is cited in 15 papers

CONDENSED MATTER

Investigation of a nonequilibrium electron subsystem in low-temperature microwave detectors

I. A. Devyatov, M. Yu. Kupriyanov

Institute of Nuclear Physics, Lomonosov Moscow State University

Abstract: The electron energy distributions arising in small-size metal absorbers of microwave radiation detectors operating at ultralow temperatures have been calculated using the kinetic equation. It is shown that the electron distributions are nonequilibrium, significantly different from the Fermi distribution, and are determined by the ratio of the rates of electron-electron and electron-phonon relaxation and by the effect of the measuring element (superconductor – insulator – normal metal junction) on the absorber. The response of such a bolometer is calculated and compared to the experimental data.

PACS: 85.35.-p

Received: 19.10.2004

 English version: Journal of Experimental and Theoretical Physics Letters, 2004, 80:10, 646–650

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