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Low-Magnetic-Field Divergence of the Electronic g Factor Obtained from the Cyclotron Spin-Flip Mode of the ν=1 Quantum Hall Ferromagnet

Vankov, A. B. ; Kulik, L. V. ; Kukushkin, I. V. ; Kirpichev, V. E. ; Dickmann, S. ; Zhilin, V. M. ; Smet, J. H. ; Klitzing, Klaus von ; Wegscheider, Werner
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Date of publication of this fulltext: 08 Feb 2010 13:23


Abstract

We report an inelastic light scattering study of the cyclotron spin-flip mode in the two-dimensional electron system at filling ν=1. The energy of this mode can serve as a probe of the many-body exchange interaction on short length scales. Its magnetic field dependence is compared with predictions based on Hartree-Fock theory. They agree well when including the nonzero width of the electron ...

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