论文标题
S-和D-波超导体中的巨型微波吸收
Giant microwave absorption in s- and d- wave superconductors
论文作者
论文摘要
我们讨论了在系统中存在DC超电流的S-和D波超导体中微波吸收的新机制。它对AC电导率产生了与非弹性准颗粒松弛时间成正比的贡献。该贡献还决定了电导率的超电流依赖性。它可能会显着超过常规贡献，因为在典型的超导体中，非弹性松弛时间比弹性释放时间长几个数量级。我们表明，在存在DC超电流的情况下，上述对电导率的贡献可以用超导体中的状态的单个粒子密度表示。我们的结果可能可以通过微波吸收测量值确定超导体的非弹性松弛时间。
We discuss a new mechanism of microwave absorption in s- and d-wave superconductors, which arises in the presence of a dc supercurrent in the system. It produces a contribution to the ac conductivity that is proportional to the inelastic quasiparticle relaxation time. This contribution also determines the supercurrent dependence of the conductivity. It may significantly exceed the conventional contribution because in typical superconductors the inelastic relaxation time is several orders of magnitude longer than the elastic one. We show that the aforementioned contribution to the conductivity may be expressed in terms of the single particle density of states in superconductors in the presence of a dc supercurrent. Our results may enable determination of the inelastic relaxation time in superconductors from microwave absorption measurements.
