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Zinoni, C.; Alloing, B.; Li, L. H.; Marsili, F.; Fiore, A.; Lunghi, L.; Gerardino, A.; Vakhtomin, Y. B.; Smirnov, K. V.; Gol’tsman, G. N. |
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Erratum: “Single photon experiments at telecom wavelengths using nanowire superconducting detectors” [Appl. Phys. Lett. 91, 031106 (2007)] |
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2010 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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96 |
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8 |
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089901 |
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SSPD, SNSPD, erratum |
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A calculation error was made in the original publication of this letter. The error was in the calculation of the noise equivalent power (NEP) values for the avalanche photodiode detector (APD) and the superconducting single photon detector (SSPD), the incorrect values were plotted on the right axis in Fig. 1(b). The correct NEP values were calculated with the same equation reported in the original letter and the revised Fig. 1(b) is shown below. The other conclusions of the paper remain unaltered. |
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0003-6951 |
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1395 |
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Shangina, E. L.; Smirnov, K. V.; Morozov, D. V.; Kovalyuk, V. V.; Goltsman, G. N.; Verevkin, A. A.; Toropov, A. I.; Mauskopf, P. |
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Title |
Concentration dependence of energy relaxation time in AlGaAs/GaAs heterojunctions: direct measurements |
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Journal Article |
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2011 |
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Semicond. Sci. Technol. |
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Semicond. Sci. Technol. |
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26 |
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2 |
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025013 |
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AlGaAs/GaAs heterojunctions |
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We present measurements of the energy relaxation time, τε, of electrons in a single heterojunction in a quasi-equilibrium state using microwave time-resolved spectroscopy at 4.2 K. We find the relaxation time has a power-law dependence on the carrier density of the two-dimensional electron gas, τε∝nγs with γ = 0.40 ± 0.02 for values of the carrier density, ns, from 1.6 × 1011 to 6.6 × 1011cm−2. The results are in good agreement with predictions taking into account the scattering of the carriers by both piezoelectric and deformation potential acoustic phonons. We compare these results with indirect measurements of the energy relaxation time from energy loss measurements involving Joule heating of the electron gas. |
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0268-1242 |
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1215 |
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Korneeva, Yu. P.; Trifonov, A. V.; Vakhtomin, Yu. B.; Smirnov, K. V. |
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Design of resonator for superconducting single-photon detector |
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Journal Article |
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2011 |
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Rus. J. Radio Electron. |
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Rus. J. Radio Electron. |
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12 |
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SSPD optical resonator, SNSPD |
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A resonator for superconducting single-photon detector is designed. Near 60% coupling with a radiation propagating from a dielectric substrate of optical fiber is demonstrated to be achieved for typical values of the detector’s film sheet resistance. |
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6 pages |
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1827 |
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Smirnov, A. V.; Karmantsov, M. S.; Smirnov, K. V.; Vakhtomin, Y. B.; Masterov, D. V.; Tarkhov, M. A.; Pavlov, S. A.; Parafin, A. E. |
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Terahertz response of thin-film YBCO bolometers |
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Journal Article |
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2012 |
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Tech. Phys. |
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Tech. Phys. |
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57 |
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12 |
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1716-1719 |
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YBCO HEB |
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The bolometric response of high-temperature thin-film YBCO superconducting detectors to an electromagnetic radiation with a frequency of 2.5 THz is measured for the first time. The minimum value of the noise-equivalent power of the detectors is 3.5 × 10−9 W/Hz−−−√. The feasibility of further increasing the sensitivity of the detectors is discussed. |
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1063-7842 |
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1817 |
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Semenov, A. V.; Devyatov, I. A.; Korneev, A. A.; Smirnov, K. V.; Goltsman, G. N.; Melnikov, A. P. |
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Derivation of expression for thermodynamic potential of “dirty” superconductor |
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Journal Article |
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2012 |
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Rus. J. Radio Electron. |
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Rus. J. Radio Electron. |
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4 |
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dirty superconductor, Usadel theory, thermodynamic potential |
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We derive a formula for thermodynamic potential of dirty superconductor which express it via isotropic quasiclassical Green functions of Usadel theory. Our result allows unify description of dynamic processes and fluctuations in superconducting nano-electronic devices. |
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Russian |
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7 pages |
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1824 |
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