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Cyclotron spin-flip mode as the lowest-energy excitation of unpolarized integer quantum Hall states
2005
Physical Review B
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The cyclotron spin-flip modes of spin unpolarized integer quantum Hall states (ν =2,4) have been studied with inelastic light scattering. The energy of these modes is significantly smaller compared to the bare cyclotron gap. Second order exchange corrections are held responsible for a negative energy contribution and render these modes the lowest energy excitations of unpolarized integer quantum Hall states.
doi:10.1103/physrevb.72.073304
fatcat:nq47iwyqg5ephewy5fesf4th34