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Very High Mobility in Semimagnetic Semiconductors with Rare Earth

  • Averous M (a1), Lombos B.A. (a2), Bruno A. (a1), Lascaray J.P. (a1), Fau C. (a1) and Lawrence M.F. (a2)...

Abstract

A semimagnetic semiconductor with rare earth like magnetic ion is studied: Pb1-xGdxTe. Very high Hall mobilities were found up to 107 cm2/V.s. The magnetization is well fitted at 4.2K by a Curie-Weisslaw, with a Gaj's parameter of 1K. The value of JNN' the exchange in a Gd pair deduced from the susceptibility measurements is small, as expected, due to the specific character of Gadolinium (S state and 4f shell): JNN/k = - O.3°K for x = 0.025.

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Very High Mobility in Semimagnetic Semiconductors with Rare Earth

  • Averous M (a1), Lombos B.A. (a2), Bruno A. (a1), Lascaray J.P. (a1), Fau C. (a1) and Lawrence M.F. (a2)...

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