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

By Michelle Chen, Woowon Kang and Werner Wegscheider

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 time scale 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

Topics: 530 Physik, ddc:530
Publisher: 'American Physical Society (APS)'
Year: 2003
DOI identifier: 10.1103/PhysRevLett.91.116804
OAI identifier: oai:epub.uni-regensburg.de:11479
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