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

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

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

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Maude, D. K.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Piot, B. A., Maude, D. K., Henini, M., Wasilewski, Z. R., Gupta, J. A., Friedland, K. J., et al. (2007). Influence of the single-particle Zeeman energy on the quantum Hall ferromagnet at high filling factors. Physical Review B, 75(15): 155332.

Cite as: https://hdl.handle.net/21.11116/0000-000E-B427-B

Abstract

In a recent paper [B. A. Piot , 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.