Excitonic ions and pseudopotentials in two-dimensional systems: Evidence for quantum Hall states of an X- gas

Article

关键词: NEGATIVELY CHARGED EXCITONS;    COMPOSITE-FERMION APPROACH;    MONOPOLE HARMONICS;    FLUID;    HIERARCHY;    WELLS;   

DOI  :  10.1103/PhysRevB.60.11661

来源: SCIE

【 摘 要 】

Systems of up to 12 electrons and six holes on the Haldane sphere are studied by exact numerical diagonalization. The low-lying states of the system involve bound excitonic complexes such as X-n(-). The angular momenta of these complexes and the pseudopotentials describing their interaction are determined. The similarity to the electron pseudopotential suggests the possibility of incompressible ground states of a gas of X- ions for nu less than or equal to 1/3. The nu=1/3 states of three and four X-'s are found. [S0163-1829(99)07639-0].

【 授权许可】

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