Charge-spin excitations of the Ising-type fractional quantum Hall ferromagnets
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Original version
Výborný, K.; Dethlefsen, A.F.; Haug, R.J.; Wójs, A.: Charge-spin excitations of the Ising-type fractional quantum Hall ferromagnets. In: Physical Review B 80 (2009), Nr. 4, 45407. DOI:
https://doi.org/10.1103/PhysRevB.80.045407
Repository version
To cite the version in the repository, please use this identifier:
https://doi.org/10.15488/2865
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Abstract:
We study the low-lying excitations from the fractional quantum Hall states at filling factors 2/3 and 2/5 and argue that the charge-carrying excitations involve spin flips, and, in particular, possibly more than one. Energies obtained by exact diagonalization and transport activation gaps measured over a wide range of magnetic fields are invoked. We discuss the relevance of the noninteracting composite-fermion picture where both fractions correspond to the same filling factor 2 of the composite fermions. © 2009 The American Physical Society.
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Publication type:
Article
Publishing status:
publishedVersion
Publication date:
2009
Keywords english:
FQH effect
,
ferromagnet
,
excitation
DDC:
530 | Physik
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