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Effect of a nickel impurity on the galvanomagnetic properties and electronic structure of PbTeстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 11 ноября 2020 г.
- Авторы: Skipetrov E.P., Kovalev B.B., Shevchenko I.V., Knotko A.V., Slynko V.E.
- Журнал: Semiconductors
- Том: 54
- Номер: 10
- Год издания: 2020
- Издательство: Springer
- Местоположение издательства: New York
- Первая страница: 1171
- Последняя страница: 1179
- DOI: 10.1134/S1063782620100279
- Аннотация: The phase and elemental composition and galvanomagnetic properties of the Pb1–yNiyTe alloys at temperatures of 4.2 K < T < 300 K in magnetic fields of B < 7 T are investigated upon a variation in the nickel-impurity concentration along a single-crystal ingot synthesized by the Bridgman–Stockbarger technique. The solubility of nickel is shown to be no more than 0.35 mol %. The anomalous temperature dependences of the Hall coefficient and temperature and field dependences of the magnetoresistance are established. The results obtained are explained under the assumption of the formation of an inversion layer with n-type conductivity on the sample surface and the existence of several competing conductivity mechanisms in the samples.A model of the Pb1–yNiyTe electronic structure is proposed that suggests Fermi-level pinning within the Ni impurity band located at the edge of the valence band and moving deeper into it with increasing temperature.
- Добавил в систему: Скипетров Евгений Павлович