| Records |
| Author |
Beck, M.; Rousseau, I.; Klammer, M.; Leiderer, P.; Mittendorff, M.; Winnerl, S.; Helm, M.; Gol'tsman, G.N.; Demsar, J. |
| Title |
Transient increase of the energy gap of superconducting NbN thin films excited by resonant narrow-band terahertz pulses |
Type |
Journal Article |
| Year |
2013 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
110 |
Issue |
26 |
Pages |
267003 (1 to 5) |
| Keywords |
NbN thin films, energy gap |
| Abstract |
Observations of radiation-enhanced superconductivity have thus far been limited to a few type-I superconductors (Al, Sn) excited at frequencies between the inelastic scattering rate and the superconducting gap frequency 2Delta/h. Utilizing intense, narrow-band, picosecond, terahertz pulses, tuned to just below and above 2Delta/h of a BCS superconductor NbN, we demonstrate that the superconducting gap can be transiently increased also in a type-II dirty-limit superconductor. The effect is particularly pronounced at higher temperatures and is attributed to radiation induced nonthermal electron distribution persisting on a 100 ps time scale. |
| Address |
Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457, Germany |
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0031-9007 |
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PMID:23848912 |
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1370 |
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| Author |
Rothwarf, Allen; Taylor, B. N. |
| Title |
Measurement of recombination lifetimes in superconductors |
Type |
Journal Article |
| Year |
1967 |
Publication |
Phys. Rev. Lett. |
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| Volume |
19 |
Issue |
1 |
Pages |
27-30 |
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American Physical Society |
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MSPU @ s @ |
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220 |
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| Author |
Johnson, M. A.; Betz, A. L.; Townes, C. H. |
| Title |
10-μm Heterodyne Stellar Interferometer |
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Journal Article |
| Year |
1974 |
Publication |
Phys. Rev. Lett. |
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33 |
Issue |
27 |
Pages |
1617-1620 |
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American Physical Society |
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