激子赝自旋超流体中的无耗散自旋-电荷转换
Dissipationless Spin-Charge Conversion in Excitonic Pseudospin Superfluid
摘要：
在自旋电子学中，由逆自旋霍尔效应或逆Rashba-Edelstein效应引起的自旋-电荷转换是普遍存在的，但具有耗散性。提出了一种在电子-空穴双层系统中利用激子赝自旋超流体实现自旋-电荷无耗散转换的机制。磁交换场提升双层系统层间激子能级的单重态-三重态简并度。单重态-三重态杂化激子的凝聚破坏了U（1）规范对称性和赝自旋旋转对称性，导致系统中的自旋-电荷耦合超流。我们从耦合量子点模型推导出激子超流的自旋-电荷耦合约瑟夫森方程，证明了这一机制。
英文摘要：
Spin-charge conversion by inverse spin Hall effect or inverse Rashba-Edelstein effect is prevalent in spintronics but dissipative. We propose a dissipationless spin-charge conversion mechanism by an excitonic pseudospin superfluid in an electron-hole double layer system. Magnetic exchange fields lift singlet-triplet degeneracy of interlayer exciton levels in the double layer system. Condensation of the singlet-triplet hybridized excitons breaks both a U(1) gauge symmetry and a pseudospin rotational symmetry around the fields, leading to spin-charge coupled superflow in the system. We demonstrate the mechanism by deriving spin-charge coupled Josephson equations for the excitonic superflow from a coupled quantum-dot model.
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。
