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arXiv 2310.04500cond-mat.str-elcond-mat.mes-hall
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伊辛自旋链拉曼光谱中畴壁禁闭的特征

Signatures of Domain-Wall Confinement in Raman Spectroscopy of Ising Spin Chains

Stefan Birnkammer, Johannes Knolle, Michael Knap

AI总结:

本文以扭曲Kitaev链为最小模型,结合矩阵乘积态与变分方法,从理论上证明畴壁禁闭束缚态在拉曼光谱中表现为尖锐峰,并揭示其波函数对称性。

摘要:

畴壁的介子型束缚态可以在准一维磁性化合物中稳定存在。本文从理论上研究了具有倾斜磁场的扭曲Kitaev链的拉曼光散射响应,以此作为$\mathrm{CoNb}_{2}\mathrm{O}_{6}$中禁闭效应的最小模型。通过数值矩阵乘积态和少畴壁变分态两种方法,我们表明禁闭诱导的束缚态直接表现为拉曼响应中的尖锐峰。值得注意的是,通过调节入射光场的偏振,我们证明拉曼响应为束缚态波函数的内禀对称性提供了新的见解。

英文摘要:

Mesonic bound states of domain walls can be stabilized in quasi one-dimensional magnetic compounds. Here, we theoretically study the Raman light scattering response of a twisted Kitaev chain with tilted magnetic fields as a minimal model for confinement in $\mathrm{CoNb}_{2}\mathrm{O}_{6}$. By both numerical matrix product states and few-domain wall variational states, we show that confinement-induced bound states directly manifest themselves as sharp peaks in the Raman response. Remarkably, by tuning the polarization of the incident light field, we demonstrate that the Raman response offers new insights into the intrinsic symmetry of the bound state wavefunction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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