Spin mapping, phase diagram, and collective modes in double-layer quantum Hall systems at v=2

Article

关键词: SPONTANEOUS INTERLAYER COHERENCE;    ELECTRON DOUBLE-LAYERS;    TRANSITIONS;    STATES;   

DOI  :  10.1103/PhysRevB.60.15578

来源: SCIE

【 摘 要 】

An exact spin mapping is identified to simplify the recently proposed hard-core boson description [Demler and Das Sarma, Phys. Rev. Lett. 82, 3895 (1999)] of the bilayer quantum Hall system at filling factor 2. The effective spin model describes an easy-plane ferromagnet subject to an external Zeeman field. The phase diagram of this effective model is determined exactly, while the Goldstone-mode spectrum, order parameter stiffness and Kosterlitz-Thouless temperature in the canted antiferromagnetic phase are computed approximately. [S0163-1829(99)00244-1].

【 授权许可】

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