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中国物理学会期刊

一维自旋-轨道模型中的畴状轨道液体态

CSTR: 32037.14.aps.52.2290

The domain-state orbital liquids in a one-dimensional spin-orbital model

CSTR: 32037.14.aps.52.2290
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  • 研究了一个一维可解自旋-轨道模型.在大自旋极限下,自旋自由度可以近似用经典自旋来描 述.在没有外磁场情形,系统的基态是伊辛自旋反铁磁背景下的轨道液体态.其低能元激发是 类似于spinon的轨道量子.而在有外磁场情形,系统会出现磁通点阵相.同时,磁通将系统分 割成不连通的轨道液体.

     

    A one-dimensional integrable spin-orbital model is studied. In the large spin li mit, the degrees of freedom of the spin part can be described by the classical I sing spins. Without the external magnetic field, the ground state of the system is a connected orbital liquid with the background of Ising antiferromagnetic ord er of spins. The elementary excitations are the usual spinon-like orbital quanta . In an external magnetic field, flux phase exists in the system. The fluxes(two parallel ising spins)cut the system into disconnected orbital liquids(domains).

     

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