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arXiv · 0705.0129

Influence of the single-particle Zeeman energy on the quantum Hall ferromagnet at high filling factors

B. A. Piot·D. K. Maude·M. Henini·Z. R. Wasilewski·J. A. Gupta·K. J. Friedland·R. Hey·K. H. Ploog·U. Gennser·A. Cavanna·D. Mailly·R. Airey·G. Hill
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Abstract

In a recent paper [B. A. Piot et al., Phys. Rev. B 72, 245325 (2005)], we have shown that the lifting of the electron spin degeneracy in the integer quantum Hall effect at high filling factors should be interpreted as a magnetic-field-induced Stoner transition. In this work, we extend the analysis to investigate the influence of the single-particle Zeeman energy on the quantum Hall ferromagnet at high filling factors. The single-particle Zeeman energy is tuned through the application of an additional in-plane magnetic field. Both the evolution of the spin polarization of the system and the critical magnetic field for spin splitting are well described as a function of the tilt angle of the sample in the magnetic field.

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B. A. Piot, D. K. Maude, M. Henini, Z. R. Wasilewski, J. A. Gupta, K. J. Friedland, R. Hey, K. H. Ploog, U. Gennser, A. Cavanna, D. Mailly, R. Airey, G. Hill. 2007-05-01. Influence of the single-particle Zeeman energy on the quantum Hall ferromagnet at high filling factors. https://doi.org/10.1103/physrevb.75.155332

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