Califano, M., Chakraborty, T., Pietiläinen, P. and Hu, C.M. (2006) Breaking of Larmor's theorem in quantum Hall states with spin-orbit coupling. Physical Review B, 73 (11). Art. No. 113315. ISSN 1550-235x
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We investigate the effect of spin-orbit (SO) interaction on the long-wavelength collective spin excitation in a two-dimensional electron gas in the fractional quantum Hall regime. The many-body correction to the single-particle electron spin resonance (ESR) energy is found to be nonzero, providing theoretical evidence of a breaking of Larmor's theorem. Such breaking is due to the loss of spin-rotational invariance introduced by the SO-induced structural inversion asymmetry in the system. This effect, whose magnitude is a significant percentage of the single-particle ESR, exhibits remarkable features in a wide range of experimentally relevant parameters and is found to be nearly material independent.
|Copyright, Publisher and Additional Information:||© 2006 The American Physical Society. This is an author produced version of a paper published in Physical Review B. Uploaded in accordance with the publisher's self archiving policy.|
|Institution:||The University of Leeds|
|Academic Units:||The University of Leeds > Faculty of Engineering (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Microwaves and Photonics (Leeds)|
|Depositing User:||Sherpa Assistant|
|Date Deposited:||14 Aug 2008 15:03|
|Last Modified:||08 Feb 2013 17:05|
|Publisher:||American Physical Society|