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26 April 2024

» arxiv » cond-mat/0606716

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Spin ordering: two different scenarios for the single and double layer structures in the fractional and integer quantum Hall effect regimes
V.T. Dolgopolov ; E.V. Deviatov ; V.S. Khrapai ; D. Reuter ; A.D. Wieck ; A. Wixforth ; K.L. Campman ; A.C. Gossard ;
Date:	28 Jun 2006
Subject:	Mesoscopic Systems and Quantum Hall Effect
Abstract:	We investigate the ground state competition at the transition from the spin unpolarized to spin ordered phase at filling factor $ u=2/3$ in single layer heterostructure and at $ u=2$ in double layer quantum well. To trace the quantum Hall phase we use the minimum in the dissipative conductivity $sigma_{xx}$. We observe two different transition scenarios in two investigated situations. For one of them we propose a qualitative explanation, based on the domain structure evolution in the vicinity of the transition point. The origin for the second scenario, corresponding to the experimental situation at $ u=2$ in double layer 2DES, still remains unclear.
Source:	arXiv, cond-mat/0606716
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