Splitting of the roton minimum in the v=5/2 Moore-Read state

Article

关键词: 2-DIMENSIONAL WIGNER CRYSTAL;    FILLED LANDAU-LEVEL;    QUANTUM HALL STATE;    COLLECTIVE EXCITATIONS;    DYNAMICAL PROPERTIES;    FILLING FACTORS;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.86.115329

来源: SCIE

【 摘 要 】

We calculate the dynamical structure factor of the v = 5/2 non-Abelian Moore-Read state in the dipole approximation, valid for large momenta. Due to the fact that both quasiparticles (qps) and quasiholes (qhs) have an internal Majorana degree of freedom, a qp-qh pair has a fermionic degree of freedom which can be either empty or occupied and leads to a splitting of the roton mode. Observation of this splitting by means of finite wavelength optical spectroscopy could provide evidence for Majorana modes in the. = 5/2 quantum Hall state.

【 授权许可】

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