Spin Polarization via Adiabatic and Counterdiabatic Engineering,Physical Review Letters

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Spin Polarization via Adiabatic and Counterdiabatic Engineering
Physical Review Letters ( IF 8.1 ) Pub Date : 2024-07-25 , DOI: 10.1103/physrevlett.133.047001
Samuel Bladwell ₁

Affiliation

A spin filter is a device that allows only a single spin state to pass, equivalent to a polarizing filter for a beam of light. Here, taking inspiration from shortcuts to adiabaticity, I demonstrate that the potential landscape of a typical quantum point contact can be tuned to act as a two terminal spin filter or to generate a spin-polarized beam. The effect presented is sufficiently robust that rough engineering yields a significant effect, as demonstrated by experiments on asymmetrically biased quantum point contacts in InAs quantum wells.

中文翻译：

通过绝热和反绝热工程实现自旋极化

自旋滤光片是一种只允许单一自旋态通过的器件，相当于光束的偏振滤光片。在这里，从绝热捷径中汲取灵感，我证明了典型量子点接触的潜在景观可以调整为充当两端自旋滤波器或生成自旋偏振光束。正如 InAs 量子阱中不对称偏置量子点接触的实验所证明的那样，所呈现的效果足够强大，粗略的工程会产生显着的效果。

更新日期：2024-07-26

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