The Cyclotron Spin-Flip Mode as the Lowest-Energy Excitation of Unpolarized Integer Quantum Hall States

Details The Cyclotron Spin-Flip Mode as the Lowest-Energy Excitation of Unpolarized Integer Quantum Hall States The Cyclotron Spin-Flip Mode as the Lowest-Energy Excitation of Unpolarized Integer Quantum Hall States

2005-01-19

arxiv.org/abs/cond-mat/0501466v2

Phys. Rev. B 72, 073304 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Published: Phys. Rev. B 72, 073304 (2005)

Scientific paper

10.1103/PhysRevB.72.073304

The cyclotron spin-flip modes of spin unpolarized integer quantum Hall states ($\nu =2,4$) 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.

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