Spin ordering: two different scenarios for the single and double layer structures in the fractional and integer quantum Hall effect regimes

Details Spin ordering: two different scenarios for the single and double layer structures in the fractional and integer quantum Hall effect regimes Spin ordering: two different scenarios for the single and double layer structures in the fractional and integer quantum Hall effect regimes

2006-06-28

arxiv.org/abs/cond-mat/0606716v1

Phys. Stat. Sol. (b) 243, No. 14, 3648 - 3652 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages

Scientific paper

10.1002/pssb.200642238

We investigate the ground state competition at the transition from the spin unpolarized to spin ordered phase at filling factor $\nu=2/3$ in single layer heterostructure and at $\nu=2$ 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 $\nu=2$ in double layer 2DES, still remains unclear.

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