Abstract
Time-resolved Kerr rotation spectroscopy under the radio frequency field to depolarize dynamic nuclear polarization reveals the intrinsic spin-relaxation time (T2) and g factor of two-dimensional electrons in a quantum Hall system. Out-of-plane magnetic field increases the spin coherence drastically through the Landau level quantization. T2 is enhanced strongly around odd filling factors where a quantum Hall ferromagnet is formed. Collapse of spin coherence and appearance of an anomalous Kerr signal observed around ν=1 are discussed in the relation to the formation of Skyrmions.
Original language | English |
---|---|
Article number | 041304 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 78 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2008 Jul 16 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics