自旋输运的普适性与幺正对称破缺
Universal Features of Spin Transport and Breaking of Unitary Symmetries
摘要：
当时间反演对称性被破缺时，具有和不具有自旋旋转对称性的量子相干系统的电输运性质表现出相同的普适性。我们表明，自旋输运区分这两种情况。在具有大电荷电导的系统中，自旋输运对时间反演对称性的破坏基本上不敏感。然而，在一个单一的出口通道的相反限制，自旋电流消失相同的存在下的时间反演对称性，但打开了打破它与轨道磁场。
英文摘要：
When time-reversal symmetry is broken, quantum coherent systems with and without spin rotational symmetry exhibit the same universal behavior in their electric transport properties. We show that spin transport discriminates between these two cases. In systems with large charge conductance, spin transport is essentially insensitive to the breaking of time-reversal symmetry. However, in the opposite limit of a single exit channel, spin currents vanish identically in the presence of time-reversal symmetry, but are turned on by breaking it with an orbital magnetic field.
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。
