Records |
Author |
Shytov, A. V.; Levitov, L. S.; Beenakker, C. W. J. |
Title |
Electromechanical noise in a diffusive conductor |
Type |
Journal Article |
Year |
2002 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
Volume |
88 |
Issue |
22 |
Pages |
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Abstract |
Electrons moving in a conductor can transfer momentum to the lattice via collisions with impurities and boundaries, giving rise to a fluctuating mechanical stress tensor. The root-mean-squared momentum transfer per scattering event in a disordered metal (of dimension L greater than the mean free path l and screening length xi) is found to be reduced below the Fermi momentum by a factor of order l/L for shear fluctuations and (xi/L)^2 for pressure fluctuations. The excitation of an elastic bending mode by the shear fluctuations is estimated to fall within current experimental sensitivity for a nanomechanical oscillator. |
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0031-9007 |
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RPLAB @ s @ |
Serial |
433 |
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Author |
Beck, M.; Klammer, M.; Lang, S.; Leiderer, P.; Kabanov, V. V.; Gol'tsman, G. N.; Demsar, J. |
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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RPLAB @ gujma @ |
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641 |
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Author |
Minaeva, Olga; Bonato, Cristian; Saleh, Bahaa E. A.; Simon, David S.; Sergienko, Alexander V. |
Title |
Odd- and even-order dispersion cancellation in quantum interferometry |
Type |
Journal Article |
Year |
2009 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
Volume |
102 |
Issue |
10 |
Pages |
4 |
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Abstract |
We describe a novel effect involving odd-order dispersion cancellation. We demonstrate that odd- and even-order dispersion cancellation may be obtained in different regions of a single quantum interferogram using frequency-anticorrelated entangled photons and a new type of quantum interferometer. This offers new opportunities for quantum communication and metrology in dispersive media. |
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RPLAB @ gujma @ |
Serial |
699 |
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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 |
Bremer, J. W.; Newhouse, V. L. |
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Journal Article |
Year |
1958 |
Publication |
Phys. Rev. Lett. |
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Volume |
1 |
Issue |
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Pages |
282 |
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Address |
Bremer, J. W.; Newhouse, V. L. |
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MSPU @ s @ bremer_prl_1958 |
Serial |
215 |
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