Records |
Author |
Tinkham, Mikhael |
Title |
Introduction to superconductivity |
Type |
Book Whole |
Year |
1996 |
Publication |
McGraw-Hill |
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Issue |
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Pages |
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Keywords |
superconductivity, BCS, GL |
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Place of Publication |
USA |
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2 |
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Serial |
896 |
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Author |
Wyss, R. A.; Karasik, B. S.; McGrath, W. R.; Bamble, B.; LeDuc, H. |
Title |
Noise and bandwidth measurements of diffusion–cooled Nb hot–electron bolometer mixers at frequencies above the superconductive energy gap |
Type |
Conference Article |
Year |
1999 |
Publication |
Proc. 10th Int. Symp. Space Terahertz Technol. |
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Volume |
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Issue |
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Pages |
215-229 |
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Place of Publication |
Charlottesville, Virginia |
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no |
Call Number |
RPLAB @ s @ qoheb_Tn_1250_at_1p1 |
Serial |
293 |
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Author |
Yagoubov, Pavel; Kroug, Matthias; Merkel, Harald; Kollberg, Erik; Schubert, Josef; Hübers, Heinz-Wilhelm |
Title |
NbN hot electron bolometric mixers at frequencies between 0.7 and 3.1 THz |
Type |
Journal Article |
Year |
1999 |
Publication |
Supercond. Sci. Technol. |
Abbreviated Journal |
Supercond. Sci. Technol. |
Volume |
12 |
Issue |
11 |
Pages |
989-991 |
Keywords |
NbN HEB mixers |
Abstract |
The performance of NbN-based phonon-cooled hot electron bolometric (HEB) quasioptical mixers is investigated in the 0.7-3.1 THz frequency range. The devices are made from a 3.5-4 nm thick NbN film on high resistivity Si and integrated with a planar spiral antenna on the same substrate. The length of the bolometer microbridge is 0.1-0.2 µm; the width is 1-2 µm. The best results of the DSB receiver noise temperature measured at 1.5 GHz intermediate frequency are: 800 K at 0.7 THz, 1100 K at 1.6 THz, 2000 K at 2.5 THz and 4200 K at 3.1 THz. The measurements were performed with a far infrared laser as the local oscillator (LO) source. The estimated LO power requirement is less than 500 nW at the receiver input. First results on spiral antenna polarization measurements are reported. |
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ISSN |
0953-2048 |
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no |
Call Number |
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Serial |
295 |
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Author |
Il’in, K. S.; Milostnaya, I. I.; Verevkin, A. A.; Gol’tsman, G. N.; Gershenzon, E. M.; Sobolewski, R. |
Title |
Ultimate quantum efficiency of a superconducting hot-electron photodetector |
Type |
Journal Article |
Year |
1998 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
Volume |
73 |
Issue |
26 |
Pages |
3938-3940 |
Keywords |
NbN SSPD, SNSPD |
Abstract |
The quantum efficiency and current and voltage responsivities of fast hot-electron photodetectors, fabricated from superconducting NbN thin films and biased in the resistive state, have been shown to reach values of 340, 220 A/W, and 4×104 V/W,
respectively, for infrared radiation with a wavelength of 0.79 μm. The characteristics of the photodetectors are presented within the general model, based on relaxation processes in the nonequilibrium electron heating of a superconducting thin film. The observed, very high efficiency and sensitivity of the superconductor absorbing the photon are explained by the high multiplication rate of quasiparticles during the avalanche breaking of Cooper pairs. |
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Edition |
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ISSN |
0003-6951 |
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no |
Call Number |
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Serial |
1579 |
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Author |
Pan, S. K.; A. R. Kerr, M. W. Pospieszalski; Lauria, E. F.; Crady, W. K.; Horner, N.; Srikanth, Jr. S.; Bryerton, E.; Saini, K.; Claude, S. M. X.; Chin, C. C.; Dindo, P.; Rodrigues, G.; Derdall, D.; Zhang, J. Z.; Lichtenberger, A. W. |
Title |
A fixed-tuned integrated SIS mixer with ultra-wideband IF and quantum-limited sensitivity for ALMA band 3 (84-116 GHz) receivers |
Type |
Conference Article |
Year |
2004 |
Publication |
Proc. 15th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
55-61 |
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Place of Publication |
Northampton, MA |
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no |
Call Number |
RPLAB @ s @ SIS_bandw_8GHz |
Serial |
358 |
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