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Terahertz-frequencies in semiconductor quantum wells are of interest due to the opportunity for making devices that operate at THz frequencies. In this study we present magnetotransport and magnetooptical data obtained in the magnetic field range 0 <; B <; 7T at QH detectors patterned as Corbino rings on AlInSb/InSb/AlInSb and HgCdTe/HgTe/HgCdTe quantum well wafers.
Thermoelectric and galvanomagnetic properties have been studied in n-Bi2-xSbxTe3-y-zSeySz and p-Bi2-xSbxTe3-y-zSey multicomponent solid solutions with various atomic substitutions in both sublattices of Bi2Te3. Anisotropy of the constant energy surface and charge carrier scattering was determined within the framework of a many-valley-model of energy spectrum using isotropic and anisotropic scattering...
Analysis of thermoelectric and galvanomagnetic properties is carried out for solid solutions (Bi, Sb)2(Te, Se, S)3 with various substitutions of atoms in sublattices of basic Bi 2Te3 compound. The increase in thermoelectric figure of merit Z is observed in the compositions with a weak anisotropy of charge carriers in mirror plane. In addition, relaxation time tensor component along trigonal direction...
Zintl phases recently received a great attention for their thermoelectric potential and interesting results were reported on Yb14MnSb11 compounds [Brown, et al., 2006]. In this paper, we present results obtained with other Zintl phases, Y1.5Gd1.5Cu3Sb4, Y3 Cu3Sb4 and Gd3Cu3Sb 4. They were synthesized in an induction furnace, followed by consequent annealing treatments. The crystallographic structure...
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