论文标题
抑制平坦带超导体中非平衡准粒子转运
Suppression of non-equilibrium quasiparticle transport in flat band superconductors
论文作者
论文摘要
我们通过使用Schwinger-keldysh方法在两末端设置中通过超导式晶格研究非平衡运输。我们发现，准粒子的传输被抑制，并且相干对传输占主导地位。对于超导导线，AC超电流克服了依赖于多个Andreev反射的直流电流。随着正常正常和正常的降压导线，Andreev反射和正常电流消失。因此，平面带超导性不仅有望在高临界温度上，而且有望抑制不需要的准粒子过程。
We study non-equilibrium transport through a superconducting flat-band lattice in a two-terminal setup with the Schwinger-Keldysh method. We find that quasiparticle transport is suppressed and coherent pair transport dominates. For superconducting leads, the AC supercurrent overcomes the DC current which relies on multiple Andreev reflections. With normal-normal and normal-superconducting leads, the Andreev reflection and normal currents vanish. Flat band superconductivity is thus promising not only for high critical temperatures but also for suppressing unwanted quasiparticle processes.
