Gershenzon, E. M., Gol'tsman, G. N., & Ptitsina, N. G. (1976). Investigation of free excitons in Ge and their condensation at submillimeter wavelengths. Sov. Phys. JETP, 43(1), 116–122.
Abstract: 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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Gershenzon, E. M., Gol'tsman, G. N., Multanovskii, V. V., & Ptitsina, N. G. (1981). Cross section for binding of free carriers into excitons in germanium. JETP Lett., 33(11), 574.
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Gershenzon, E. M., Goltsman, G. N., Multanovskii, V. V., & Ptitsina, N. G. (1982). Kinetics of submillimeter impurity and exciton photoconduction in Ge. Optics and Spectroscopy, 52(4), 454–455.
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Gershenzon, E., Goltsman, G., Orlov, L., & Ptitsina, N. (1978). Population of excited-states of small admixtures in germanium. In Izv. Akad. Nauk SSSR, Seriya Fizicheskaya (Vol. 42, pp. 1154–1159). Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia.
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Gershenzon, E. M., Gol'tsman, G. N., & Ptitsina, N. G. (1972). Observation of the free-exciton spectrum at submillimeter wavelengths. JETP Lett., 16(4), 161–162.
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Gershenzon, E. M., Gol'tsman, G. N., Multanovskii, V. V., & Ptitsina, N. G. (1983). Kinetics of electron and hole binding into excitons in germanium. Sov. Phys. JETP, 57(2), 369–376.
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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Gershenzon, E. M., & Goltsman, G. N. (1972). Zeeman effect in excited-states of donors in germanium. Sov. Phys. Semicond., 6(3), 509.
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Gershenzon, E. M., & Gol'tsman, G. N. (1971). Transitions of electrons between excited states of donors in germanium. JETP Lett., 14(2), 63–65.
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Gershenzon, E. M., Goltsman, G. N., & Orlov, L. (1976). Investigation of population and ionization of donor excited states in Ge. In Physics of Semiconductors (pp. 631–634). North-Holland Publishing Co.
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Bondarenko, O. I., Gershenzon, E. M., Gurvich, Y. A., Orlova, S. L., & Ptitsina, N. G. (1972). Measurement of the width of the cyclotron resonance line of n-type Ge in quantizing magnetic fields. Presumably: Sov. Phys. Semicond. | Физика и техника полупроводников, 6, 362–363.
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