Second Harmonic Generation in Spin-Glass Microstructures and Fabrication of Microstructures in IV-VI Epilayers |
| G. Grabecki, T. Dietl, Marek Cieplak, W. Plesiewicz, A. Lenard, T. Skośkiewicz Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland E. Kamińska, A. Piotrowska, R. Żarecka Institute of Electron Technology, Al. Lotników 32/46, 02-668 Warszawa, Poland G. Springholz and G. Bauer Institut für Halbleiterphysik, Johannes Kepler Universität Linz, 4040 Linz, Austria |
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| We studied magnetoconductance of two different mesoscopic systems: microregions containing two-dimensional electron gas adjacent to a grain-boundary plane in bicrystals of Hg0.79Cd0.19Mn0.02Te and photolithographically patterned microstructures of Pb1-xMnxSe. In both systems universal conductance fluctuations and generation of the second-harmonic voltage were observed at T ≤ 1 K. Moreover, in the former system the second harmonic signal exhibited distinct rise when the sample was cooled below the spin-glass freezing temperature (100 mK). |
| DOI: 10.12693/APhysPolA.84.781 PACS numbers: 71.55.Jv |