Massive Spin Collective Mode in Quantum Hall Ferromagnet
arXiv:cond-mat/0311239 · doi:10.1103/PhysRevB.69.121304
Abstract
It is shown that the collective spin rotation of a single Skyrmion in quantum Hall ferromagnet can be regarded as precession of the entire spin texture in the external magnetic field, with an effective moment of inertia which becomes infinite in the zero g-factor limit. This low-lying spin excitation may dramatically enhance the nuclear spin relaxation rate via the hyperfine interaction in the quantum well slightly away from filling factor equal one.
4 pages
References in corpus (9)
- Collective Excitations, NMR, and Phase Transitions in Skyrme Crystals
- Hartree-Fock Theory of Skyrmions in Quantum Hall Ferromagnets
- The Quantum Hall Effect: Novel Excitations and Broken Symmetries
- Spectroscopic Evidence for the Localization of Skyrmions near Nu=1 as T->0
- Quantum Hall Skyrmions with Higher Topological Charge
- Skyrmions in disordered heterostructures}
- Hopf term and the effective Lagrangian for the Skyrmions in a two-dimensional electron gas at small g-factor
- Fast Incomplete Decoherence of Nuclear Spins in Quantum Hall Ferromagnet
- Nuclear Spin Relaxation for Higher Spin