论文标题
准粒子干扰是散装奇数超导配对的直接实验探针
Quasiparticle interference as a direct experimental probe of bulk odd-frequency superconducting pairing
论文作者
论文摘要
我们表明，由于无处不在的弱杂质而引起的准粒子干扰（QPI），并通过傅立叶变换扫描隧道显微镜和光谱探测起到了直接的实验探测，探测了散装奇数频率超导配对。以在应用磁场下的常规$ S $ - 波超导体为例，我们表明QPI峰的性质只能通过包括该系统中生成的奇数频率配对相关性来表征。特别是，我们确定奇数配对的定义特征会导致QPI中的偏差不对称性，无论其起源如何，具有奇数配对的材料通常都会产生。
We show that quasiparticle interference (QPI) due to omnipresent weak impurities and probed by Fourier transform scanning tunneling microscopy and spectroscopy acts as a direct experimental probe of bulk odd-frequency superconducting pairing. Taking the example of a conventional $s$-wave superconductor under applied magnetic field, we show that the nature of the QPI peaks can only be characterized by including the odd-frequency pairing correlations generated in this system. In particular, we identify that the defining feature of odd-frequency pairing gives rise to a bias asymmetry in the QPI, present generically in materials with odd-frequency pairing irrespective of its origin.
