Records |
Author |
Goltsman, G. N.; Maliavkin, A. V.; Ptitsina, N. G.; Selevko, A. G. |
Title |
Magnetic exciton spectroscopy in uniaxially compressed Ge at submillimeter waves |
Type |
Conference Article |
Year |
1986 |
Publication |
Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
Abbreviated Journal |
Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
Volume |
50 |
Issue |
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Pages |
280-281 |
Keywords |
Ge, axial compression loads, excitons, germanium, magnetic spectroscopy, submillimeter waves, Zeeman effect |
Abstract |
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Language |
Russian |
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Edition |
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ISSN |
0367-6755 |
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Conference |
3rd Vsesoiuznyi Seminar po Opticheskomu Detektirovaniiu Magnitnykh Rezonansov v Tverdykh Telakh, Kiev, Ukrainian SSR, May 1985 |
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no |
Call Number |
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Serial |
1708 |
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Author |
Gol'tsman, G. N.; Gusinskii, E. N.; Malyavkin, A. V.; Ptitsina, N. G.; Selevko, A. G.; Edel'shtein, V. M. |
Title |
The excitonic Zeeman effect in uniaxially-strained germanium |
Type |
Journal Article |
Year |
1987 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
Volume |
65 |
Issue |
6 |
Pages |
1233-1241 |
Keywords |
Ge, Zeeman effect |
Abstract |
We have carried out a high-resolution spectroscopic study of the absorption of submillimeter radiation by free excitons in germanium compressed along the [ 1 11 ] axis in a magnetic field parallel to the compression axis. In particular, we studied the splitting of the 1s- 2p transition in fields up to 6 kOe at T = 1.6 K, and observed a complex pattern in the Zeeman splitting which we believe is related to the effect of thermal motion of the excitons in a magnetic field on their internal structure (the magneto-Stark effect). The calculated submillimeter spectrum of excitons agrees with the experimental data. We predict that in a magnetic field the energy of the 2p, term is a minimum at a finite value of the exciton momentum perpendicular to the field-that is, the energy minimum forms a ring in momentum space. It follows that the density of states for this term must be a nonmonotonic function of the energy. A theory is developed of analogous phenomena in positronium. |
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Call Number |
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Serial |
1705 |
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