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Title: Fractional spin Hall effect in atomic Bose gases
Authors: Liu, X.-J. 
Liu, X.
Kwek, L.C. 
Oh, C.H. 
Issue Date: 1-Apr-2009
Citation: Liu, X.-J., Liu, X., Kwek, L.C., Oh, C.H. (2009-04-01). Fractional spin Hall effect in atomic Bose gases. Physical Review B - Condensed Matter and Materials Physics 79 (16) : -. ScholarBank@NUS Repository.
Abstract: We propose fractional spin Hall effect (FSHE) by coupling pseudospin states of cold bosonic atoms to optical fields. The present scheme is an extension to interacting bosonic system of the recent work on optically induced spin Hall effect in noninteracting atomic system. The system has two different types of ground states. The first type of ground state is a 1/3-factor Laughlin function and has the property of chiral-antichiral interchange antisymmetry, while the second type is shown to be a 1/4-factor wave function with chiral-antichiral symmetry. The fractional statistics corresponding to the fractional spin Hall states are studied in detail and are discovered to be different from that corresponding to the fractional quantum Hall (FQH) states. Therefore the present FSHE can be distinguished from FQH regime in the measurement. © 2009 The American Physical Society.
Source Title: Physical Review B - Condensed Matter and Materials Physics
ISSN: 10980121
DOI: 10.1103/PhysRevB.79.165301
Appears in Collections:Staff Publications

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