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| Author |
Andreev, A. F. |
| Title |
The thermal conductivity of the intermediate state in superconductors |
Type |
Journal Article |
| Year |
1964 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
| Volume |
19 |
Issue |
5 |
Pages |
1228-1231 |
| Keywords |
superconductors, intermediate state, thermal conductivity |
Abstract  |
It is shown that, owing to over-the-barrier reflection of electron excitations at the boundary of the normal and superconducting phases, a temperature drop occurs when there is a flow of heat. The additional thermal resistance of a superconductor in the intermediate state is calculated. It is shown that it increases exponentially as the temperature is lowered and does not depend on the electron mean free path. |
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MSPU @ s @ Andreev_reflection |
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216 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Multanovskii, V. V.; Ptitsyna, N. G. |
| Title |
Capture of photoexcited carriers by shallow impurity centers in germanium |
Type |
Journal Article |
| Year |
1979 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
| Volume |
50 |
Issue |
4 |
Pages |
728-734 |
| Keywords |
Ge, photoexcited carriers, shallow impurity centers |
| Abstract |
Measurements were made of the lifetimes rf of free carriers and the relaxation time 7, of the submillimeter impurity photoconductivity when carriers are captured by attracting shallow donors and acceptom in Ge. It is nod that in samples with capture-center concentration N,Z 10"cm-' the relaxation time 7, greatly exceeds rf in the temperature range 4.2-12 K. The measured values of 7,- are compared with the calculation of cascade recombination by the classical model. To evaluate the data on T,, the distinguishing features of this model are considered for the nonstationary case. The substantial difference betweea the values of rf and T, is attributed to re-emission of the carriers from the excited states of the shallow impurities. |
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1720 |
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Gershenzon, E. M.; Gurvich, Yu. A.; Orlova, S. L.; Ptitsina, N. G. |
| Title |
Cyclotron resonance of electrons in Ge in a quantizing magnetic field in the case of inelastic scattering by acoustic phonons |
Type |
Journal Article |
| Year |
1975 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
| Volume |
40 |
Issue |
2 |
Pages |
311-315 |
| Keywords |
Ge, cyclotron resonance |
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Results are presented of an experimental study of the linewidth of cyclotron resonance under strong quantization conditions on the scattering of electrons by acoustic phonons. The measurements were performed in the 2....{).4 mm wavelength range at temperatures between 10 and 1.4 OK. A number of singularities were observed in the temperature and frequency dependences of the cyclotron linewidth. These can be ascribed to the effect of inhomogeneous broadening due to nonparabolicity of the electron spectrum, which is renormalized as a result of interaction with acoustic phonons. |
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1768 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. |
| Title |
Investigation of free excitons in Ge and their condensation at submillimeter wavelengths |
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Journal Article |
| Year |
1976 |
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Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
| Volume |
43 |
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1 |
Pages |
116-122 |
| Keywords |
Ge, free excitons |
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Results are presented of an investigation of free excitons in Ge in the submillimeter wavelength range for low as well as for high excitation levels when interaction between the excitons becomes important. The free-exciton energy spectrum is discussed. It is shown that the drop radii and their concentrations can be determined by measuring the temperature dependence of the free-exciton concentration. A section of the phase diagram is obtained in the 0.5-2.8 K temperature range for the free excitons+condensate system. |
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1731 |
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Gershenzon, E. M.; Gershenzon, M. E.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
| Title |
Heating of electrons in a superconductor in the resistive state by electromagnetic radiation |
Type |
Journal Article |
| Year |
1984 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
| Volume |
59 |
Issue |
2 |
Pages |
442-450 |
| Keywords |
Nb HEB |
| Abstract |
The effect of heating of electrons relative to phonons is observed and investigated in a superconducting film that is made resistive by current and by an external magnetic field. The effect is manifested by an increase of the film resistance under the influence of the electromagnetic radiation, and is not selective in the frequency band 10^10-10^15 Hz. The independence of the effect of frequency under conditions of strong scattering by static defects is attributed to the decisive role of electron-electron collisions in the distribution function. The experimentally obtained characteristic time of resistance variation near the superconducting transition corresponds to the relaxation time of the order parameter, while at lower temperatures and fields it corresponds to the time of the inelastic electron-phonon interaction. |
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RPLAB @ phisix @ |
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983 |
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