振动介导的Dzyaloshinskii-Moriya相互作用作为供体-受体分子中手性诱导自旋选择性的起源
Vibrationally-mediated Dzyaloshinskii-Moriya interaction as the origin of Chirality-Induced Spin Selectivity in donor-acceptor molecules
AI总结：
研究通过低能扭转模式调控跃迁和自旋轨道耦合，产生Dzyaloshinskii-Moriya相互作用，实现高自旋极化，解释EPR测量中的磁场依赖性并预测非平凡温度依赖性。
摘要：
手性诱导自旋选择性（CISS）最近在光激发的供体-手性桥-受体分子中被观测到，但缺乏能解释现有实验的预测理论。本文展示低能扭转模式调控跃迁和自旋轨道耦合，产生Dzyaloshinskii-Moriya相互作用，使转移电子与供体上的电子之间产生高自旋极化，适用于实际参数。模型引入了低能标在自旋动力学中，解释EPR测量中的磁场依赖性并预测非平凡温度依赖性，通过数值模拟验证。该理论为未来测试实验和自旋电子学及量子技术的应用设计奠定了基础。
英文摘要：
Chirality-induced spin selectivity (CISS) was recently observed in photo-excited donor-chiral bridge-acceptor molecules, but a predictive theory able to explain available experiments is still lacking. Here we show that low-energy torsional modes modulating hopping and spin-orbit coupling give rise to a Dzyaloshinskii-Moriya interaction between the transferred electron and the one sitting on the donor, producing high spin polarization for perfectly realistic parameters. Our model introduces a low energy scale in the spin dynamics which explains the magnetic field dependence observed in EPR measurements and predicts a non-trivial temperature dependence, as demonstrated by numerical simulations. The present theory lays the foundations for future test-bed experiments and for the design of applications in spintronics and quantum technologies.
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。
