Debye mechanism of giant microwave absorption in superconductors [electronic resource]
Here, we discuss a novel mechanism of microwave absorption in superconductors, which is similar to the Debye absorption mechanism in molecular gases. The contribution of this mechanism to the ac conductivity is proportional to the inelastic quasiparticle relaxation time $?_{\text{in}}$ rather than t...
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2020.
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| Summary: | Here, we discuss a novel mechanism of microwave absorption in superconductors, which is similar to the Debye absorption mechanism in molecular gases. The contribution of this mechanism to the ac conductivity is proportional to the inelastic quasiparticle relaxation time $?_{\text{in}}$ rather than the elastic one $?_{\text{el}}$ and therefore it can be much larger than the conventional one. The Debye contribution to the linear conductivity arises only in the presence of a dc supercurrent in the system and its magnitude depends strongly on the orientation of the microwave field relative to the supercurrent. The Debye contribution to the nonlinear conductivity exists even in the absence of dc supercurrent, and it is proportional to $?_{\text{in}}$. Therefore the nonlinear threshold is anomalously low. Microwave absorption measurements may provide direct information about $?_{\text{in}}$ in superconductors. |
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| Item Description: | Published through Scitech Connect. 04/20/2020. "Journal ID: ISSN 2469-9950." ": US2211033." Smith, M. ; Andreev, A. V. ; Spivak, B. Z. ; Univ. of Washington, Seattle, WA (United States) |
| Physical Description: | Size: Article No. 134508 : digital, PDF file. |