Critical exponents for the metal-insulator transition of ⁷⁰Ge:Ga in magnetic fields

2002/06/14 by Michio Watanabe, Kohei M. Itoh, Masashi Morishita +2
Physics and Astronomy · #cond-mat.dis-nn

paper · pdf

published as Proc. ICPS25, pp. 152--153 (2001) · 2 pages, 3 figures, in "Proceedings of the 25th International Conference on the Physics of Semiconductors," edited by N. Miura and T. Ando (Springer-Verlag, Berlin, 2001, ISBN 3-540-41778-8) pp. 152--153

arxiv created 2002/06/14 · arxiv updated 2009/11/30

Abstract

We have measured the electrical conductivity of nominally uncompensated ⁷⁰Ge:Ga samples in magnetic fields up to B=8 T at low temperatures (T=0.05-0.5 K) in order to investigate the metal-insulator transition in magnetic fields. The values of the critical exponents in magnetic fields are consistent with the scaling theories.

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