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arXiv 1207.3533cond-mat.mes-hallcond-mat.quant-gas
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非线性光学自旋霍尔效应驱动下Skyrmions到半孤子的嬗变

Transmutation from Skyrmions to Half-Solitons Driven by the Nonlinear Optical Spin-Hall Effect

H. Flayac, D. D. Solnyshkov, I. A. Shelykh, G. Malpuech

摘要:

我们证明了线性光学自旋霍尔效应中激子-极化激元的自旋-轨道相互作用模拟产生的极化畴与Skyrmion晶格的形成有关。在非线性制度中,极化激元-极化激元相互作用的自旋各向异性导致自旋域的空间压缩和Skyrmions到半孤子的突然转变,与自旋电流的聚焦和强各向异性发射模式的出现相关。

英文摘要:

We show that the polarization domains generated in the linear optical spin-Hall effect by the analog of spin-orbit interaction for exciton-polaritons are associated with the formation of a Skyrmion lattice. In the non-linear regime, the spin anisotropy of the polariton-polariton interactions results in a spatial compression of the spin domains and in an abrupt transformation of the Skyrmions into half-solitons, associated with both the focalization of the spin currents and the emergence of a strongly anisotropic emission pattern.

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