Extra Spin-Wave mode in Quantum Hall systems. Beyond the Skyrmion Limit

Details Extra Spin-Wave mode in Quantum Hall systems. Beyond the Skyrmion Limit Extra Spin-Wave mode in Quantum Hall systems. Beyond the Skyrmion Limit

2010-04-11

arxiv.org/abs/1004.1840v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 4 figures

Scientific paper

We report on the observation of a new spin mode in a quantum Hall system in the vicinity of odd electron filling factors under experimental conditions excluding the possibility of Skyrmion excitations. The new mode having presumably zero energy at odd filling factors emerges at small deviations from odd filling factors and couples to the spin-exciton. The existence of an extra spin mode assumes a nontrivial magnetic order at partial fillings of Landau levels surrounding quantum Hall ferromagnets other then the Skyrmion crystal.

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