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Anomalous state of a 2DEG in vicinal Si MOSFET in high magnetic fields | | Z.D. Kvon
; Y.Y. Proskuryakov
; A.K. Savchenko
; | | Date: |
14 Dec 2002 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Strongly Correlated Electrons | cond-mat.mes-hall cond-mat.str-el | | Abstract: | We report the observation of an anomalous state of a 2D electron gas near a vicinal surface of a silicon MOSFET in high magnetic fields. It is characterised by unusual behaviour of the conductivities $sigma_{xx}$ and $sigma_{xy}$, which can be described as a collapse of the Zeeman spin splitting accompanied by a large peak in $sigma_{xx}$ and an anomalous peak in $ sigma_{xy}$. It occurs at densities corresponding to the position of the Fermi level above the onset of the superlattice mini-gap inherent to the vicinal system. The range of fields and densities where this effect exists has been determined, and it has been shown that it is suppressed by parallel magnetic fields. | | Source: | arXiv, cond-mat/0301218 | | Services: | Forum | Review | PDF | Favorites | |
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