Edge-mode velocities and thermal coherence of quantum Hall interferometers

Article

关键词: NON-ABELIAN STATISTICS;    STATES;    TRANSPORT;    LIQUIDS;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.80.235330

来源: SCIE

【 摘 要 】

We present comprehensive results on the edge-mode velocities in a quantum Hall droplet with realistic interaction and confinement at various filling fractions. We demonstrate that the charge-mode velocity scales roughly with the valence Landau level filling fraction and the Coulomb energy in the corresponding Landau level. At Landau level filling fraction nu=5/2, the stark difference between the bosonic charge-mode velocity and the fermionic neutral-mode velocity can manifest itself in the thermal smearing of the non-Abelian quasiparticle interference. We estimate the dependence of the coherence temperature on the confining potential strength, which may be tunable experimentally to enhance the non-Abelian state.

【 授权许可】

Free