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Melinte S, Freytag N, Horvatic M, et al. NMR determination of 2D electron spin polarization at nu = 1/2. Phys Rev Lett. 2000;84(2):354-7doi: 10.1103/PhysRevLett.84.354.
Melinte, S., Freytag, N., Horvatic, M., Berthier, C., Levy, L. P., Bayot, V., & Shayegan, M. (2000). NMR determination of 2D electron spin polarization at nu = 1/2. Physical review letters, 84(2), 354-7. https://doi.org/10.1103/PhysRevLett.84.354
Melinte, et al. "NMR determination of 2D electron spin polarization at nu = 1/2." Physical review letters vol. 84,2 (2000): 354-7. doi: https://doi.org/10.1103/PhysRevLett.84.354
Melinte S, Freytag N, Horvatic M, Berthier C, Levy LP, Bayot V, Shayegan M. NMR determination of 2D electron spin polarization at nu = 1/2. Phys Rev Lett. 2000 Jan 10;84(2):354-7. doi: 10.1103/PhysRevLett.84.354. PMID: 11015909.
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Phys Rev Lett. 2000 Jan 10;84(2):354-7. doi: 10.1103/PhysRevLett.84.354.

NMR determination of 2D electron spin polarization at nu = 1/2.

Physical review letters

Melinte, Freytag, Horvatic, Berthier, Levy, Bayot, Shayegan

Affiliations

  1. Unite PCPM, Universite Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium.

PMID: 11015909 DOI: 10.1103/PhysRevLett.84.354

Abstract

Using a "standard" NMR spin-echo technique we determined the spin polarization P of two-dimensional electrons, confined to GaAs quantum wells, from the hyperfine shift of Ga nuclei located in the wells. Concentrating on the temperature ( 0.05 less, similarT less, similar10 K) and magnetic field ( 7 less, similarB less, similar17 T) dependencies of P at Landau level filling factor nu = 1/2, we find that the results are described well by a simple model of noninteracting composite fermions, although some inconsistencies remain when the two-dimensional electron system is tilted in the magnetic field.

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