Energy of Spectrum and Scattering of Current Carriers in Gallium Arsenide

Autor:	D. N. Nasledov
Rok vydání:	1961
Předmět:	Electron mobility Materials science Condensed matter physics Scattering General Physics and Astronomy Gallium arsenide Crystal Ionized impurity scattering chemistry.chemical_compound chemistry Impurity Electrical resistivity and conductivity Condensed Matter::Superconductivity Magnetic impurity
Zdroj:	Journal of Applied Physics. 32:2140-2145
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1777032
Popis:	Conductivity in impurity bands is observed in gallium arsenide at low temperatures. The impurity banding phenomena observed in n‐ and p‐type crystals are markedly different due to the wide divergence in their effective masses. In the temperature interval where the crystal conductivity is determined by conduction in the impurity band, resistivity of n‐type material decreases with increasing magnetic field.The temperature dependences of carrier mobility indicate that at low temperature the impurity ions play the dominant role of the scattering centers. In order to investigate scattering processes more thoroughly, studies were made of the thermomagnetic Nernst‐Ettingshausen effects which are very sensitive to the scattering mechanism. It was found that, in the case of nondegenerate specimens at low temperatures, scattering by impurity ions dominates, and at high temperatures by acoustical lattice vibrations; scattering by acoustical lattice vibrations becomes dominant even at low temperature in specimens of ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::88c39bc93d09269034fc0a87fcb6430d https://doi.org/10.1063/1.1777032 Zobrazit plný text záznamu