Conductance Fluctuations in Microstructures of HgCdMnTe Bicrystals |
| G. Grabecki, A. Lenard, W. Plesiewicz, J. Jaroszyński, Marek Cieplak, T. Skośkiewicz, T. Dietl Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland E. Kamińska, A. Piotrowska Institute of Electron Technology, Al. Lotników 32/46, 02-668 Warszawa, Poland and B. Bulka Institute of Molecular Physics, Polish Academy of Sciences, 60-179 Poznań, Poland |
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| Microscopic four-contact probes to semimagnetic HgCdMnTe grain-boundary inversion layers have been photolithographically patterned. Magnetoresistance measurements performed on these samples revealed aperiodic conductance fluctuations of the magnitude of the order of e2/h. Quantitative analysis of both fluctuation amplitude and their mean period indicate that we have approached the mesoscopic regime in our system. This opens new possibilities in studies of spin-subsystem dynamics in semimagnetic semiconductors. |
| DOI: 10.12693/APhysPolA.80.307 PACS numbers: 73.40.Lq |