2014/11/30 by Hua-Bi Zeng, Hua Bi Zeng, Hai-Qing Zhang
Physics and Astronomy · #Black Holes and Theoretical Physics #Condensed matter physics #Holography #Impurity #Materials science #Optics #Order (exchange) #Phase (matter) #Phase transition #Physics #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Superconductivity #cond-mat.supr-con #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2015.05.025
15 pages, 8 figures
arxiv created 2015/05/27 · openalex publication_date 2015/05/29 · arxiv updated 2015/12/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the single normal impurity effect in a superconductor by the holographic method. When the size of impurity is much smaller than the host superconductor , we can reproduce the Anderson theorem, which states that a conventional s-wave superconductor is robust to a normal (non-magnetic) impurity with small impurity strength . However, by increasing the size of the impurity in a fixed-size host superconductor, we find a decreasing critical temperature T c of the host superconductor, which agrees with the results in condensed matter literatures. More importantly, the phase transition at the critical impurity strength (or the critical temperature) is of zeroth order.