非中心对称超导体的巨磁导性
Giant magnetoconductivity in non-centrosymmetric superconductors
摘要：
讨论了非中心对称超导薄膜中产生巨磁导的一种新的物理机制。这种机制是由自旋-轨道相互作用和系统中的反转对称性破缺的组合引起的，并且在存在面内磁场${\bf H}_\|$的情况下出现。它产生的贡献的电导率，这显示出强烈的依赖于电场${\bf E}$和${\bf H}_\|$之间的角度，并成比例的准粒子的非弹性弛豫时间。由于在典型的情况下，后者比弹性大得多，因此这种贡献可以比传统的电导率大得多，从而导致巨大的微波吸收。
英文摘要：
We discuss a novel physical mechanism which gives rise to a giant magnetoconductivity in non-centrosymmetric superconducting films. This mechanism is caused by a combination of spin-orbit interaction and inversion symmetry breaking in the system, and arises in the presence of an in-plane magnetic field ${\bf H}_\|$. It produces a contribution to the conductivity, which displays a strong dependence on the angle between the electric field ${\bf E}$ and ${\bf H}_\|$, and is proportional to the inelastic relaxation time of quasiparticles. Since in typical situations the latter is much larger than the elastic one this contribution can be much larger than the conventional conductivity thus leading to giant microwave absorption.
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