| Records |
| Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Gogidze, I. G.; Semenov, A. D.; Sergeev, A. V. |
| Title |
Processes of electron-phonon interaction in thin YBaCuO films |
Type |
Journal Article |
| Year |
1991 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
| Volume |
185-189 |
Issue |
|
Pages |
1371-1372 |
| Keywords |
YBCO HTS detectors |
| Abstract |
The ultrafast voltage response of YBaCuO films to laser radiation is studied and compared with previously investigated quasiparicles response to radiation of submillimeter wavelength range. Voltage shift under the visible light radiation has two components. Picosecond response realized as suppression superconductivity by nonequilibrium excess quasiparticles, response time is determined by quasiparticles recombination rate. Nanosecond response is probably due to bolometric effect. |
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| ISSN |
0921-4534 |
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no |
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Serial |
1676 |
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| Author |
Gol'tsman, G. N.; Kouminov, P.; Goghidze, I.; Gershenzon, E. M. |
| Title |
Nonequilibrium kinetic inductive response of YBaCuO thin films to low-power laser pulses |
Type |
Journal Article |
| Year |
1994 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
| Volume |
235-240 |
Issue |
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Pages |
1979-1980 |
| Keywords |
YBCO HTS KID |
| Abstract |
Transient non-equilibrium kinetic inductive voltage response of YBaCuO thin films to 20 ps pulses of YAG:Nd laser radiation with 0.63 μm and 1.5 μm wavelength has been revealed. By increasing the sensitivity of 100 ps resolution time registration system and diminishing light intensity (fluence 0.1-1 μJ2/cm2) and transport current (density j≤105 A/cm2) we observed a perculiar bipolar signal form with nearly equal amplitudes of each sign. The integration of the kinetic inductive response over time gives the result which is qualitatively of the same form as the response in the resistive and normal states: nonequilibrium picosecond scale component followed by bolometric nanosecond. Nonequilibrium response is interpreted as suppression of order parameter by excess of quasiparticles followed by a change in resistance in the resistive state and kinetic inductance in superconductive state. |
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| ISSN |
0921-4534 |
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no |
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1634 |
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| Author |
Karasik, B.S.; Milostnaya, I.I.; Zorin, M.A.; Elantev, A.I.; Gol'tsman, G.N.; Gershenzon, E.M. |
| Title |
Subnanosecond S-N and N-S switching of YBCO film induced by current pulse |
Type |
Journal Article |
| Year |
1994 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
| Volume |
235-240 |
Issue |
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Pages |
1981-1982 |
| Keywords |
YBCO HTS switches |
| Abstract |
A transition of YBCO bridge 60 nm thick from superconducting to normal state induced by an abrupt current step has been studied. A subnanosecond stage has been observed during both S-N and N-S transition. The data obtained can be explained by hot-electron phenomena. On the basis of experimental results a prediction of picosecond switch performance has been made. |
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| ISSN |
0921-4534 |
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no |
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Serial |
1633 |
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| Author |
Varyukhin, S. V.; Zakharov, A. A.; Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsyna, N. G.; Chulkova, G. M. |
| Title |
AC losses and submillimeter absorption in single crystals La2CuO4 |
Type |
Journal Article |
| Year |
1990 |
Publication |
Phys. B Condens. Mat. |
Abbreviated Journal |
Phys. B Condens. Mat. |
| Volume |
165-166 |
Issue |
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Pages |
1269-1270 |
| Keywords |
metal-dielectric-La2Cu04 |
| Abstract |
The La2CuO4 single crystals were used to carry out the measurements of transmission spectra within the submillimeter range of wavelengths, as well as the capacitance C and conductivity G in the region of acoustic frequencies of the metal-dielectric-La2Cu04 system at low temperatures. The optical spectra display a threshold character. There takes place a sharp decreasing of transmission signal in the energy range of hυ>1.5meV. The C(ω,T) and G(ω,T) dependences have a universal form characteristic of relaxation processes of the Debye type. The relaxation time dependence displays a thermoactivation character τ(T)-exp(ξ/T) with a gap value of ξ≃2meV,coinciding with the optical one. It is assumed that there exist excitations with a characteristic energy ~ 2meV in La2Cu04.A possible nature of the revealed low-energy excitations is discussed. |
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Edition |
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| ISSN |
0921-4526 |
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no |
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Serial |
1686 |
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| Author |
Sergeev, A.; Karasik, B. S.; Ptitsina, N. G.; Chulkova, G. M.; Il'in, K. S.; Gershenzon, E. M. |
| Title |
Electron–phonon interaction in disordered conductors |
Type |
Journal Article |
| Year |
1999 |
Publication |
Phys. Rev. B Condens. Matter |
Abbreviated Journal |
Phys. Rev. B Condens. Matter |
| Volume |
263-264 |
Issue |
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Pages |
190-192 |
| Keywords |
disordered conductors, electron-phonon interaction |
| Abstract |
The electron–phonon interaction is strongly modified in conductors with a small value of the electron mean free path (impure metals, thin films). As a result, the temperature dependencies of both the inelastic electron scattering rate and resistivity differ significantly from those for pure bulk materials. Recent complex measurements have shown that modified dependencies are well described at K by the electron interaction with transverse phonons. At helium temperatures, available data are conflicting, and cannot be described by an universal model. |
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| ISSN |
0921-4526 |
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no |
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Serial |
1765 |
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| Author |
Gol’tsman, G. N.; Gershenzon, E. M. |
| Title |
Phonon-cooled hot-electron bolometric mixer: overview of recent results |
Type |
Journal Article |
| Year |
1999 |
Publication |
Appl. Supercond. |
Abbreviated Journal |
Appl. Supercond. |
| Volume |
6 |
Issue |
10-12 |
Pages |
649-655 |
| Keywords |
NbN HEB mixers |
| Abstract |
The paper presents an overview of recent results for NbN phonon-cooled hot electron bolometric (HEB) mixers. The noise temperature of the receivers based on both quasioptical and waveguide versions of HEB mixer has crossed the level of 1 K·GHz−1 at 430 GHz (410 K) and 600–650 GHz (480 K) and is close to this level at 820 GHz (1100 K) and 900 GHz (980 K). The gain bandwidth measured for quasioptical HEB mixer at 620 GHz reached 4 GHz and the noise temperature bandwidth was almost 8 GHz. Local oscillator power requirements are about 1 μW for mixers made by photolithography and are about 100 nW for mixers made by e-beam lithography. The studies in terahertz receivers based on HEB superconducting mixers now present a dynamic, rapidly developing field. |
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Edition |
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| ISSN |
0964-1807 |
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no |
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1564 |
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| Author |
Hübers, H.-W.; Schubert, J.; Krabbe, A.; Birk, M.; Wagner, G.; Semenov, A.; Gol’tsman, G.; Voronov, B.; Gershenzon, E. |
| Title |
Parylene anti-reflection coating of a quasi-optical hot-electron-bolometric mixer at terahertz frequencies |
Type |
Journal Article |
| Year |
2001 |
Publication |
Infrared Physics & Technology |
Abbreviated Journal |
Infrared Physics & Technology |
| Volume |
42 |
Issue |
1 |
Pages |
41-47 |
| Keywords |
NbN HEB mixers, anti-reflection coating |
| Abstract |
Parylene C was investigated as anti-reflection coating for silicon at terahertz frequencies. Measurements with a Fourier-transform spectrometer show that the transmittance of pure silicon can be improved by about 30% when applying a layer of Parylene C with a quarter wavelength optical thickness. The 10% bandwidth of this coating extends from 1.5 to 3 THz for a center frequency of 2.3–2.5 THz, where the transmittance is constant. Heterodyne measurements demonstrate that the noise temperature of a hot-electron-bolometric mixer can be reduced significantly by coating the silicon lens of the hybrid antenna with a quarter wavelength Parylene C layer. Compared to the same mixer with an uncoated lens the improvement is about 30% at a frequency of 2.5 THz. |
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Edition |
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| ISSN |
1350-4495 |
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no |
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Serial |
1548 |
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| Author |
Boyarskii, D. A.; Gershenzon, V. E.; Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G.; Tikhonov, V. V.; Chulkova, G. M. |
| Title |
On the possibility of determining the microstructural parameters of an oil-bearing layer from radiophysical measurement data |
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Journal Article |
| Year |
1996 |
Publication |
J. of Communications Technology and Electronics |
Abbreviated Journal |
J. of Communications Technology and Electronics |
| Volume |
41 |
Issue |
5 |
Pages |
408-414 |
| Keywords |
submillimeter waves, transmission |
| Abstract |
A method for the reconstruction of microstructural properties of an oil-bearing rock from the spectral dependence of the transmission factor of submillimeter waves is proposed. |
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| ISSN |
1064-2269 |
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| Notes |
Радиотехника и электроника 41, no. 4 (1996): 441-447 |
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no |
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Serial |
1611 |
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Gershenzon, E. M.; Goltsman, G. N. |
| Title |
Zeeman effect in excited-states of donors in germanium |
Type |
Journal Article |
| Year |
1972 |
Publication |
Sov. Phys. Semicond. |
Abbreviated Journal |
Sov. Phys. Semicond. |
| Volume |
6 |
Issue |
3 |
Pages |
509 |
| Keywords |
Ge, donors, Zeeman effect |
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Amer Inst Physics 1305 Walt Whitman Rd, Ste 300, Melville, Ny 11747-4501 Usa |
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no |
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Serial |
1737 |
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| Author |
Gershenzon, E. M.; Goltsman, G. N.; Ptitsyna, N. G. |
| Title |
Investigation of excited donor states in GaAs |
Type |
Journal Article |
| Year |
1974 |
Publication |
Sov. Phys. Semicond. |
Abbreviated Journal |
Sov. Phys. Semicond. |
| Volume |
7 |
Issue |
10 |
Pages |
1248-1250 |
| Keywords |
GaAs, excited donor states |
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Amer Inst Physics 1305 Walt Whitman Rd, Ste 300, Melville, Ny 11747-4501 Usa |
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no |
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Serial |
1733 |
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| Author |
Gershenzon, E.; Goltsman, G.; Elantev, A.; Kagane, M. |
| Title |
Energy-spectrum of small donors and acceptors in germanium and effect of magnetic-field on it |
Type |
Conference Article |
| Year |
1978 |
Publication |
Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
Abbreviated Journal |
Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
| Volume |
42 |
Issue |
6 |
Pages |
1142-1148 |
| Keywords |
energy spectrum, Ge, magnetic field |
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no |
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Serial |
1722 |
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| Author |
Gershenzon, E. M.; Goltsman, G.; Orlova, S.; Ptitsina, N.; Gurvich, Y. |
| Title |
Germanium hot-electron narrow-band detector |
Type |
Journal Article |
| Year |
1971 |
Publication |
Sov. Radio Engineering And Electronic Physics |
Abbreviated Journal |
Sov. Radio Engineering And Electronic Physics |
| Volume |
16 |
Issue |
8 |
Pages |
1346 |
| Keywords |
Ge HEB detectors |
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Scripps Clinic Res Foundation 476 Prospect St, La Jolla, Ca 92037 |
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no |
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Serial |
1741 |
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| Author |
Gershenzon, E. M.; Goltsman, G. N.; Orlov, L. |
| Title |
Investigation of population and ionization of donor excited states in Ge |
Type |
Conference Article |
| Year |
1976 |
Publication |
Physics of Semiconductors |
Abbreviated Journal |
Physics of Semiconductors |
| Volume |
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Issue |
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Pages |
631-634 |
| Keywords |
Ge, donor excited states |
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Amsterdam |
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| Publisher |
North-Holland Publishing Co. |
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no |
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1732 |
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| Author |
Gershenzon, E.; Goltsman, G.; Orlov, L.; Ptitsina, N. |
| Title |
Population of excited-states of small admixtures in germanium |
Type |
Conference Article |
| Year |
1978 |
Publication |
Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
Abbreviated Journal |
Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
| Volume |
42 |
Issue |
6 |
Pages |
1154-1159 |
| Keywords |
Ge, excited states, admixtures |
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Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia |
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no |
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1723 |
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| Author |
Blagosklonskaya, L. E.; Gershenzon, E. M.; Gol’tsman, G. N.; Elant’ev, A. I. |
| Title |
Effect of a strong magnetic field on the spectrum of donors in InSb |
Type |
Journal Article |
| Year |
1978 |
Publication |
Sov. Phys. Semicond. |
Abbreviated Journal |
Sov. Phys. Semicond. |
| Volume |
11 |
Issue |
12 |
Pages |
1395-1397 |
| Keywords |
InSb, spectrum of donors, strong magnetic field |
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no |
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Serial |
1725 |
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