Coupling to real and virtual phonons in tunneling spectroscopy of superconductors
Coupling to real and virtual phonons in tunneling spectroscopy of superconductors
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DOI：
10.1103/physrevb.93.060505
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发表时间：
2015-04
影响因子：
3.7
通讯作者：
J. Jandke;Patrik Hlobil;M. Schackert;W. Wulfhekel;J. Schmalian
中科院分区：
文献类型：
--
作者：
J. Jandke;Patrik Hlobil;M. Schackert;W. Wulfhekel;J. Schmalian
超导体隧穿谱中的精细结构已被广泛用于识别负责库珀配对的相互作用的指纹。在这里，我们表明，对于扫描隧道显微镜（STM）的铅，列入非弹性隧穿过程是必不可少的这些精细结构的正确解释。因此，对于STM，通常的McMillan隧道谱反演算法必须进行修改，以包括非弹性隧道事件，这对于识别传统和非传统超导体中的配对胶至关重要。
Fine structures in the tunneling spectra of superconductors have been widely used to identify fingerprints of the interaction responsible for Cooper pairing. Here, we show that for scanning tunneling microscopy (STM) of Pb, the inclusion of inelastic tunneling processes is essential for the proper interpretation of these fine structures. For STM the usual McMillan inversion algorithm of tunneling spectra must therefore be modified to include inelastic tunneling events, an insight that is crucial for the identification of the pairing glue in conventional and unconventional superconductors alike.