ACTA

Precision of the Hall Quantization in Naturally Occurring Two-Dimensional System - HgCdMnTe Bicrystals

G. Grabecki^a, A. Wittlin^a,b, T. Dietl^a, P.A.A. Teunissen^b, S.A.J. Wiegers^b and J.A.A.J. Perenboom^b
^aInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46,02-668 Warszawa, Poland
^bHigh Field Magnet Laboratory and Research Institute for Materials, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands

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New magnetoresistance measurements on naturally occurring inversion layers adjacent to grain boundaries in narrow gap diluted magnetic semiconductor HgCdMnTe (Eg ≤ 200 meV) have been performed. The magnetic fields up to 20 T simultaneously with millikelvine temperatures have been applied. Possible experimental factors affecting the quantum Hall effect in our system are discussed in detail. .

DOI: 10.12693/APhysPolA.82.733
PACS numbers: 72.20.My, 72.80.Ey, 73.40.Lq