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

A.B. Van'kov; A.L. Parakhonsky; I.V. Kukushkin; J.H. Smet; K. von Klitzing; L.V. Kulik; S. Dickmann; V.E. Kirpichev; W. Wegscheider

arxiv: cond-mat/0501466 · v2 · submitted 2005-01-19 · ❄️ cond-mat.mes-hall · cond-mat.str-el

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

L.V. Kulik , I.V. Kukushkin , S. Dickmann , V.E. Kirpichev , A.B. Van'kov , A.L. Parakhonsky , J.H. Smet , K. von Klitzing

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W. Wegscheider

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classification ❄️ cond-mat.mes-hall cond-mat.str-el

keywords cyclotronenergyhallintegermodesquantumstatesunpolarized

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

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