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Abstract: The conductivity of hybrid microstructures with superconducting contacts made of niobium nitride to a semiconductor with a two-dimensional electron gas in a AlGaAs/GaAs heterostructure has been investigated. Distinctive features of the behavior of the conductivity indicate the presence of multiple Andreev reflection at scattering centers in the normal region near the superconductor-semiconductor boundary.
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Gerecht E, Musante CF, Yngvesson KS, Waldman J, Gol'tsman GN, Yagoubov PA, et al. Optical coupling and conversion gain for NbN HEB mixer at THz frequencies. In: Proc. 4-th Int. Semicond. Device Research Symp.; 1997. p. 47–50.
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Verevkin AA, Ptitsina NG, Smirnov KV, Goltsman GN, Gershenson EM, Yngvesson KS. Direct measurements of electron energy relaxation times at an AlGaAs/GaAs heterointerface in the optical phonon scattering range. In: Proc. 4-th Int. Semicond. Device Research Symp.; 1997. p. 55–8.
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Verevkin AA, Ptitsina NG, Smirnov KV, Gol'tsman GN, Voronov BM, Gershenzon EM, et al. Hot electron bolometer detectors and mixers based on a superconducting-two-dimensional electron gas-superconductor structure. In: Proc. 4-th Int. Semicond. Device Research Symp.; 1997. p. 163–6.
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