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Metamorphosis of the Quantum Hall Ferromagnet at $ν= 2/5$

Michelle Chen·Woowon Kang·Werner Wegscheider
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Abstract

We report on the dramatic evolution of the quantum Hall ferromagnet in the fractional quantum Hall regime at $ν= 2/5$ filling. A large enhancement in the characteristic timescale gives rise to a dynamical transition into a novel quantized Hall state. The observed Hall state is determined to be a zero-temperature phase distinct from the spin-polarized and spin-unpolarized $ν= 2/5$ fractional quantum Hall states. It is characterized by a strong temperature dependence and puzzling correlation between temperature and time.

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Michelle Chen, Woowon Kang, Werner Wegscheider. 2003-07-29. Metamorphosis of the Quantum Hall Ferromagnet at $ν= 2/5$. https://doi.org/10.1103/physrevlett.91.116804

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