论文标题
手性声子诱导自旋极化
Chiral Phonon Induced Spin-Polarization
论文作者
论文摘要
当前对手性的理解表明结构和角动量（包括自旋）之间存在联系。这在手性诱导的自旋选择性效应中尤其强调，其中手性结构充当自旋滤波器。但是，最近发现手性声子的发现表明，声子也可能带有角动量，也可以将其视为磁矩，从而增加了总矩。在这里，表明手性声子可以在原本非磁性电子结构中诱导非平凡的自旋纹理。通过考虑一种设置，其中电子和声子彼此连接，可以表明手性声子可以将其角动量传递到电子储层中，从而将其变为自旋偏振。此外，每当电子与Achiral Phonons连接时，都不存在等效机制。
The current understanding of chirality suggests the existence of a connection between structure and angular momentum, including spin. This is particularly emphasised in the chiral induced spin selectivity effect, where chiral structures act as spin filters. However, the recent discovery of chiral phonons have demonstrated that phonons too may carry angular momentum which also can be regarded as magnetic moments which add to the total moment. Here, it is shown that chiral phonons may induce a non-trivial spin-texture in an otherwise non-magnetic electronic structure. By considering a set-up in which electrons and phonons are interfaced with each other, it is shown that chiral phonons may transfer its angular momentum into the electron reservoir which, thereby, becomes spin-polarized. It is, moreover, shown that an equivalent mechanism does not exist whenever the electrons are interfaced with achiral phonons.
