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Gershenzon, E. M.; Gol'tsman, G. N.; Kagane, M. L. |
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Title |
Energy spectrum of acceptors in germanium and its response to a magnetic field |
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Year |
1977 |
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Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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45 |
Issue |
4 |
Pages |
769-776 |
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p-Ge, photoconductivity, energy spectrum, magnetic field |
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Abstract |
We investigated the spectrum of the submillimeter photoconductivity of p-Ge at helium temperatures and the effects of a magnetic field up to 40 kOe on the spectrum. A large number of lines of transitions between the excited states of the acceptors was observed, some of the lines were identified, and the energies of a number of spectral levels B, Al, Ga, In, and TI in Ge were identified. The results are compared with calculations and with experimental data obtained from the spectra of the photoexcitation of the ground state of the impurities. Using one transition as an example, we discuss the splitting of the excited states of acceptors in the magnetic field and under uniaxial compression. |
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1727 |
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Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. |
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Title |
Submillimeter spectroscopy of semiconductors |
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Journal Article |
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Year |
1973 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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Volume |
37 |
Issue |
2 |
Pages |
299-304 |
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Keywords |
semiconductors, submillimeter spectroscopy, spectrometer, BWO, Ge, free excitons |
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The possibility is considered of carrying out submillimeter-wave spectral investigations of semiconductors by means of a high resolution spectrometer with backward-wave tubes. Results of a study of the excitation spectra of small impurities, D-(A +) centers and free excitons in germanium are presented. |
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1735 |
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Andreev, A. F. |
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Title |
The thermal conductivity of the intermediate state in superconductors |
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Year |
1964 |
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Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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Volume |
19 |
Issue |
5 |
Pages |
1228-1231 |
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Keywords |
superconductors, intermediate state, thermal conductivity |
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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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Mel’nikov, A. P.; Gurvich, Y. A.; Shestakov, L. N.; Gershenzon, E. M. |
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Title |
Magnetic field effects on the nonohmic impurity conduction of uncompensated crystalline silicon |
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2001 |
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Jetp Lett. |
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Jetp Lett. |
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73 |
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1 |
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44-47 |
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Keywords |
uncompensated crystalline silicon, nonohmic impurity conduction, magnetic field |
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The impurity conduction of a series of crystalline silicon samples with the concentration of major impurity N ≈ 3 × 1016 cm−3 and with a varied, but very small, compensation K was measured as a function of the electric field E in various magnetic fields H-σ(H, E). It was found that, at K < 10−3 and in moderate E, where these samples are characterized by a negative nonohmicity (dσ(0, E)/dE < 0), the ratio σ(H, E)/σ(0, E) > 1 (negative magnetoresistance). With increasing E, these inequalities are simultaneously reversed (positive nonohmicity and positive magnetoresistance). It is suggested that both negative and positive nonohmicities are due to electron transitions in electric fields from impurity ground states to states in the Mott-Hubbard gap. |
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0021-3640 |
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1752 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D. |
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Title |
Measurement of the energy gap in the compound YBaCu3O9-δ on the basis of the IR absorption spectrum |
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1987 |
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JETP Lett. |
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JETP Lett. |
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46 |
Issue |
5 |
Pages |
237-238 |
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Keywords |
YBCO HTS detectors |
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For the first time the long-wave infrared absorption spectrum has been measured by means of the bolometric effect and energy gap for high-temperature superconducting ceramics YBa/sub 2/Cu/sub 3/O/sub 9-delta/ has been determined from absorption threshold. 2delta/kT/sub c/ value is equal to 0.6. |
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1703 |
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