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- W2026021955 abstract "Abstract Measurements of the conductivity, Hall coefficient, and the transverse and longitudinal magnetoresistance coefficients as functions of surface potential have been made on several thin, high-resistivity, n-type germanium samples. The resulting data is compared to a three-band theoretical model due to Petritz which is extended to include both an anisotropic conduction band appropriate for germanium and the condition of longitudinal magnetic fields. For transverse magnetic field directions perpendicular to the large area sample surfaces, an anomalous behavior was observed upon reversal of either the magnetic field or sample current directions. In the case of the transverse magnetoresistance, the anomalous contributions could be determined by averaging over the various current and magnetic field directions. A similar procedure was not possible for the Hall data, thus rendering the interpretation of the surface Hall coefficient somewhat ambiguous. For conditions wherein the magnetic field is parallel to the large area surface of the sample (which includes the longitudinal magnetoresistance) no such anomalous behavior was observed. In addition, it is shown that the longitudinal magnetoresistance data can be interpreted in terms of a one-band model (anisotropic conduction band electrons), thus eliminating the ambiguity inherent in the choice of three-band parameters as is necessary for transverse effects. It is concluded that the longitudinal magnetoresistance affords a relatively unambiguous determination of the reduction of electron mobilities due to surface scattering. The resulting data indicates that the surface scattering is predominantly random at the temperature (285°K) employed in the experiments." @default.
- W2026021955 created "2016-06-24" @default.
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- W2026021955 date "1962-09-01" @default.
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- W2026021955 title "Effective mobilities of surface carriers in germanium" @default.
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- W2026021955 doi "https://doi.org/10.1016/0022-3697(62)90172-5" @default.
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