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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 (down) Sov. Phys. Semicond.
Volume 11 Issue 12 Pages 1395-1397
Keywords InSb, spectrum of donors, strong magnetic field
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Notes Approved no
Call Number Serial 1725
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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 (down) Sov. Phys. Semicond.
Volume 7 Issue 10 Pages 1248-1250
Keywords GaAs, excited donor states
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Publisher Amer Inst Physics 1305 Walt Whitman Rd, Ste 300, Melville, Ny 11747-4501 Usa Place of Publication Editor
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Notes Approved no
Call Number Serial 1733
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Multanovskii, V. V.; Ptitsina, N. G.
Title Kinetics of electron and hole binding into excitons in germanium Type Journal Article
Year 1983 Publication Sov. Phys. JETP Abbreviated Journal (down) Sov. Phys. JETP
Volume 57 Issue 2 Pages 369-376
Keywords Ge, electron and hole binding
Abstract The kinetics of binding of free carriers'into excitons under stationary and nonstationary conditions is studied by investigating the submillimeter photoconductivity of Ge in a wide range of temperatures and of excitation levels. It is shown that the absolute values and the temperature dependence of the binding cross section (o- T-'.' ) can be satisfactorily described by the cascade recombination theory. The value of o and its temperature dependence differ significantly from the cross sections, measured in the same manner, for capture by attracting small impurities. Under nonstationary conditions, just as in the case of recombination with shallow impurities, a signifi- cant role is played by the sticking of the carriers in highly excited states.
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Notes Approved no
Call Number Serial 1711
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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 (down) 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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Notes Approved no
Call Number Serial 1705
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G.; Riger, E. R.
Title Effect of electron-electron collisions on the trapping of free carriers by shallow impurity centers in germanium Type Journal Article
Year 1986 Publication Sov. Phys. JETP Abbreviated Journal (down) Sov. Phys. JETP
Volume 64 Issue 4 Pages 889-897
Keywords Ge, trapping of free carriers
Abstract Cascade Auger recombination of free carriers on shallow impurities in Ge is investigated under quasi-equilibrium conditions (T= 2-12 K) and in impurity breakdown. The Auger capture cross sections are found to be a,= 5. 10-l9 T-'n cm2 for donors and uip= 7- T-5p cm2 for acceptors. It is shown that in an isotropic semiconductor (p-Ge) ui is well described by the cascade-capture theory that takes into account only electron-electron collisions. In an anisotropic semiconductor ui is considerably larger (n-Ge, strongly uniaxially compressedp-Ge). Under impurity breakdown conditions the electron-electron collisions determine the lifetimes of the free carriers only in samples with appreciable density of the compensating impurity (Nk loi3 cmP3).
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Notes Approved no
Call Number Serial 1707
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