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Author Johnson, M. A.; Betz, A. L.; Townes, C. H. openurl 
  Title 10-μm Heterodyne Stellar Interferometer Type Journal Article
  Year 1974 Publication Phys. Rev. Lett. Abbreviated Journal  
  Volume 33 Issue 27 Pages 1617-1620  
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  Publisher American Physical Society Place of Publication Editor  
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  Notes Approved no  
  Call Number (up) Serial 228  
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Author Shah, Jagdeep; Pinczuk, A.; Gossard, A. C.; Wiegmann, W. openurl 
  Title Energy-loss rates for hot electrons and holes in GaAs quantum wells Type Journal Article
  Year 1985 Publication Phys. Rev. Lett. Abbreviated Journal Phys. Rev. Lett.  
  Volume 54 Issue Pages 2045-2048  
  Keywords 2DEG, GaAs/AlGaAs, heat flow, electron-phonon, hole-phonon, carrier-phonon, interactions  
  Abstract We report the first direct determination of carrier-energy-loss rates in a semiconductor. These measurements provide fundamental insight into carrier-phonon interactions in semiconductors. Unexpectedly large differences are found in the energy-loss rates for electrons and holes in GaAs/AlGaAs quantum wells. This large difference results from an anomalously low electron-energy-loss rate, which we attribute to the presence of nonequilibrium optical phonons rather than the effects of reduced dimensionality or dynamic screening.  
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  Notes Approved no  
  Call Number (up) Serial 633  
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Author Shah, Nayana; Pekker, David; Goldbart, Paul M. doi  openurl
  Title Inherent stochasticity of superconductor-resistor switching behavior in nanowires Type Journal Article
  Year 2008 Publication Phys. Rev. Lett. Abbreviated Journal Phys. Rev. Lett.  
  Volume 101 Issue Pages 207001(1 to 4)  
  Keywords superconducting nanowires, phase-slip, self-heating effect, temperature profile  
  Abstract We study the stochastic dynamics of superconductive-resistive switching in hysteretic current-biased superconducting nanowires undergoing phase-slip fluctuations. We evaluate the mean switching time using the master-equation formalism, and hence obtain the distribution of switching currents. We find that as the temperature is reduced this distribution initially broadens; only at lower temperatures does it show the narrowing with cooling naively expected for phase slips that are thermally activated. We also find that although several phase-slip events are generally necessary to induce switching, there is an experimentally accessible regime of temperatures and currents for which just one single phase-slip event is sufficient to induce switching, via the local heating it causes.  
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  Notes Approved no  
  Call Number (up) Serial 919  
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Author Usadel, Klaus D. doi  openurl
  Title Generalized diffusion equation for superconducting alloys Type Journal Article
  Year 1970 Publication Phys. Rev. Lett. Abbreviated Journal Phys. Rev. Lett.  
  Volume 25 Issue 8 Pages 507  
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  Abstract Eilenberger's transportlike equations for a superconductor of type II can be simplified very much in the dirty limit. In this limit a diffusionlike equation is derived which is the generalization of the de Gennes-Maki theory for dirty superconductors to arbitrary values of the order parameter.  
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  Notes Approved no  
  Call Number (up) Serial 920  
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Author Pothier, H.; Guéron, S.; Birge, Norman O.; Esteve, D.; Devoret, M. H. doi  openurl
  Title Energy distribution function of quasiparticles in mesoscopic wires Type Journal Article
  Year 1997 Publication Phys. Rev. Lett. Abbreviated Journal  
  Volume 79 Issue 18 Pages 3490-3493  
  Keywords tunnel probe, metallic nanowire, diffusive wire, diffusive nanowire  
  Abstract We have measured with a tunnel probe the energy distribution function of Landau quasiparticles in metallic diffusive wires connected to two reservoir electrodes, with an applied bias voltage. The distribution function in the middle of a 1.5-μm-long wire resembles the half sum of the Fermi distributions of the reservoirs. The distribution functions in 5-μm-long wires are more rounded, due to interactions between quasiparticles during the longer diffusion time across the wire. From the scaling of the data with the bias voltage, we find that the scattering rate between two quasiparticles varies as <c9><203a>–2, where <c9><203a> is the energy transferred.  
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  Notes Approved no  
  Call Number (up) Serial 921  
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Author Anthore, A.; Pothier, H.; Esteve, D. doi  openurl
  Title Density of states in a superconductor carrying a supercurrent Type Journal Article
  Year 2003 Publication Phys. Rev. Lett. Abbreviated Journal Phys. Rev. Lett.  
  Volume 90 Issue 12 Pages 127001 (1 to 4)  
  Keywords Usadel, superconducting nanowire  
  Abstract We have measured the tunneling density of states (DOS) in a superconductor carrying a supercurrent or exposed to an external magnetic field. The pair correlations are weakened by the supercurrent, leading to a modification of the DOS and to a reduction of the gap. As predicted by the theory of superconductivity in diffusive metals, we find that this effect is similar to that of an external magnetic field.  
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  Notes Recommended by Klapwijk Approved no  
  Call Number (up) Serial 924  
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Author Beck, M.; Rousseau, I.; Klammer, M.; Leiderer, P.; Mittendorff, M.; Winnerl, S.; Helm, M.; Gol'tsman, G.N.; Demsar, J. url  doi
openurl 
  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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  ISSN 0031-9007 ISBN Medium  
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  Notes PMID:23848912 Approved no  
  Call Number (up) Serial 1370  
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Author Rothwarf, Allen; Taylor, B. N. doi  openurl
  Title Measurement of recombination lifetimes in superconductors Type Journal Article
  Year 1967 Publication Phys. Rev. Lett. Abbreviated Journal  
  Volume 19 Issue 1 Pages 27-30  
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  Publisher American Physical Society Place of Publication Editor  
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  Notes Approved no  
  Call Number (up) MSPU @ s @ Serial 220  
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Author Bremer, J. W.; Newhouse, V. L. openurl 
  Title Type Journal Article
  Year 1958 Publication Phys. Rev. Lett. Abbreviated Journal  
  Volume 1 Issue Pages 282  
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  Address Bremer, J. W.; Newhouse, V. L.  
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  Notes Approved no  
  Call Number (up) MSPU @ s @ bremer_prl_1958 Serial 215  
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Author Beck, M.; Klammer, M.; Lang, S.; Leiderer, P.; Kabanov, V. V.; Gol'tsman, G. N.; Demsar, J. doi  openurl
  Title Energy-gap dynamics of superconducting NbN thin films studied by time-resolved terahertz spectroscopy Type Journal Article
  Year 2011 Publication Phys. Rev. Lett. Abbreviated Journal Phys. Rev. Lett.  
  Volume 107 Issue 17 Pages 4  
  Keywords NbN thin film, energy gap dynamics  
  Abstract Using time-domain terahertz spectroscopy we performed direct studies of the photoinduced suppression and recovery of the superconducting gap in a conventional BCS superconductor NbN. Both processes are found to be strongly temperature and excitation density dependent. The analysis of the data with the established phenomenological Rothwarf-Taylor model enabled us to determine the bare quasiparticle recombination rate, the Cooper pair-breaking rate and the electron-phonon coupling constant, λ=1.1±0.1, which is in excellent agreement with theoretical estimates.  
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  Notes Approved no  
  Call Number (up) RPLAB @ gujma @ Serial 641  
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