Warm Electron Coefficient of n-InSb

概要

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The nonlinear conductivity has been measured in pulsed field up to t20 V/cmat temperatures 60 - 370 K for samples with various impurity concentrations,2.0 x 10" - 6.0 x 10" cm '. The warm electron coefficient is almost independentof the impurity concentration above 190K, and nearly constant, :-J.2.9><10 ' cm'/V', above 260 K. With decreasing temperature, (a) it decreases andcrosses zero at 190 K, (b) it decreases further toward negative and reaches aminimum, and (c) it turns again to positive. In the regions (b) and (c), the coeffi-cient depends on the impurity concentration. The dominant scattering centers in(a), (b) and (c) are found to be the holes, the phonons and the ionized impurities,respectively.
社団法人日本物理学会の論文
1985-10-15