Critical exponents for the metal-insulator transition of ^{70}Ge:Ga in magnetic fields
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We have measured the electrical conductivity of nominally uncompensated ^{70}Ge: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.
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
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