Photoluminescence fine structures in the fractional quantum Hall effect regime

Article

关键词: 2-DIMENSIONAL ELECTRON-GAS;    COMPOSITE FERMIONS;    SPIN POLARIZATION;    CHARGED EXCITONS;    STATES;    EXCITATIONS;    INTEGER;    FLUID;   

DOI  :  10.1103/PhysRevB.89.115317

来源: SCIE

【 摘 要 】

We investigate polarization-resolved fine structure in the photoluminescence (PL) in the fractional quantum Hall effect regime at B = 4-6 T, where small Zeeman energy allows spin-depolarized ground states. We observe up to five distinct peaks with characteristic polarization and temperature dependence in the vicinity of nu = 1/3 and quenching of the PL from triplet charged quasiexcitons at around nu = 1/4. Those findings appear to be consistent with results of exact diagonalization on a Haldane sphere including all spin configurations and are understood to be PL from fractionally charged quasiexcitons.

【 授权许可】

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