Narayanamurti, V. ; Dynes, R. C. (1971) Intense tunable phonon fluorescence in superconductors Physical Review Letters, 27 (7). pp. 410-413. ISSN 0031-9007
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Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.27.410
Related URL: http://dx.doi.org/10.1103/PhysRevLett.27.410
Abstract
The "phonon fluorescence" spectrum of superconducting Sn and Pb0.5Tl0.5 films pumped by a heat pulse is studied through the observation of resonance absorption by Sb donor levels in uniaxially compressed Ge. The spectrum consists primarily of a narrow band of phonons centered about the energy gap 2Δ (1.2 meV for Sn, 1.7 meV for Pb0.5Tl0.5). The power generated in this narrow band is at least hundreds of milliwatts. In the case of Sn the phonon energy has been tuned from 1.2 meV down to 0.7 meV by a magnetic field parallel to the plane of the film.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 30681 |
| Deposited On: | 23 Dec 2010 12:49 |
| Last Modified: | 11 Jun 2011 08:39 |
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