Collective spin precession excitations in a two-dimensional quantum Hall 
ferromagnet

Kulik, L. V.; Zhuravlev, A. S.; Kirpichev, V. E.; Bisti, V. E.; Kukushkin, I. V.

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Collective spin precession excitations in a two-dimensional quantum Hall ferromagnet

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Kulik, L. V.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Kukushkin, I. V.
Research Group Solid State Nanophysics (Jurgen H. Smet), Max Planck Institute for Solid State Research, Max Planck Society;
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Kulik, L. V., Zhuravlev, A. S., Kirpichev, V. E., Bisti, V. E., & Kukushkin, I. V. (2013). Collective spin precession excitations in a two-dimensional quantum Hall ferromagnet. Physical Review B, 87(4): 045316.

Cite as: https://hdl.handle.net/21.11116/0000-000E-C5FF-5

Abstract

Using the inelastic light scattering technique we observe the spin excitations for a quantum Hall ferromagnet with charged defects. The lowest energy spin excitation branch behaves as the theoretically predicted collective spin precession ("cyclotron") mode of the spin-texture liquid. A coupling between the spin-exciton and the "cyclotron" mode indicates that the existing theory of noninteracting spin texture liquid does not provide a fully adequate description for the ground state of a quantum Hall ferromagnet with charged defects. DOI: 10.1103/PhysRevB.87.045316