NMR Probing Spin Excitations in the Ring-Like Structure of a Two-Subband System
无序系统与神经网络
2009-11-11 v1
摘要
Resistively detected nuclear magnetic resonance (NMR) is observed inside the ring-like structure, with a quantized Hall conductance of 6e^2/h, in the phase diagram of a two subband electron system. The NMR signal persists up to 400 mK and is absent in other states with the same quantized Hall conductance. The nuclear spin-lattice relaxation time, T1, is found to decrease rapidly towards the ring center. These observations are consistent with the assertion of the ring-like region being a ferromagnetic state that is accompanied by collective spin excitations.
引用
@article{arxiv.cond-mat/0610706,
title = {NMR Probing Spin Excitations in the Ring-Like Structure of a Two-Subband System},
author = {X. C. Zhang and G. Scott and H. W. Jiang},
journal= {arXiv preprint arXiv:cond-mat/0610706},
year = {2009}
}
备注
4 pages, 4 figures