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arXiv 2203.05934cond-mat.supr-concond-mat.mes-hall
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超导体自旋链边缘态的莫尔色散

Moiré dispersion of edge states in spin chains on superconductors

Cristina Mier, Deung-Jang Choi, Nicolás Lorente

摘要:

我们对s波超导体上铁磁自旋链的计算表明,边态能量随链长的振荡是由类Friedel振荡和自旋链晶格的离散性所引起的.通过改变自旋晶格,可以控制边缘态的莫尔色散。特别是,我们可以设计非色散边缘状态,保持在固定的能量,而不管自旋链的大小分布。这是研究自旋链边缘态的重要一步,自旋链可以用一定的尺寸色散来制造。

英文摘要:

Our calculations of ferromagnetic spin chains on s-wave superconductors show that the energy oscillations of edge states with the chain's length are due to a moiré pattern emerging from Friedel-like oscillations and the discreteness of the spin-chain lattice. By modifying the spin lattice, the moiré dispersion of edge states can be controlled. In particular, we can engineer non-dispersive edge states that remain at fixed energy regardless of the size distribution of the spin chains. This is an important step in the study of edge states of spin chains that can be fabricated with a certain size dispersion.

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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