Kunc, J. and Piot, B. A. and Maude, D. K. and Potemski, M. and Grill, R. and Betthausen, C. and Weiss, D. and Kolkovsky, V. and Karczewski, G. and Wojtowicz, T. (2015) Magnetoresistance quantum oscillations in a magnetic two-dimensional electron gas. PHYSICAL REVIEW B, 92 (8): 085304. ISSN 1098-0121, 1550-235X
Full text not available from this repository. (Request a copy)Abstract
Magnetotransport measurements of Shubnikov-de Haas (SdH) oscillations have been performed on two-dimensional electron gases (2DEGs) confined in CdTe and CdMnTe quantum wells. The quantum oscillations in CdMnTe, where the 2DEG interacts with magnetic Mn ions, can be described by incorporating the electron-Mn exchange interaction into the traditional Lifshitz-Kosevich formalism. The modified spin splitting leads to characteristic beating pattern in the SdH oscillations, the study of which indicates the formation of Mn clusters resulting in direct anti-ferromagnetic Mn-Mn interaction. The Landau-level broadening in this system shows a peculiar decrease with increasing temperature, which could be related to statistical fluctuations of the Mn concentration.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ANTIFERROMAGNETIC EXCHANGE; FIELD; SUSCEPTIBILITY; SEMICONDUCTORS; CD1-XMNXTE; TRANSPORT; HETEROSTRUCTURES; CONDUCTIVITY; LIMIT; IONS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Jun 2019 11:44 |
| Last Modified: | 14 Jun 2019 11:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/5027 |
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