ICTS:29296

Video URL

Kagome superconductivity: conventional or unconventional?

Kagome superconductivity: conventional or unconventional?

(2024). Kagome superconductivity: conventional or unconventional?. SciVideos. https://youtube.com/live/3HTtMVjI2hU

Kagome superconductivity: conventional or unconventional?. SciVideos, Aug. 13, 2024, https://youtube.com/live/3HTtMVjI2hU 

          @misc{ scivideos_ICTS:29296,
            doi = {},
            url = {https://youtube.com/live/3HTtMVjI2hU},
            author = {},
            keywords = {},
            language = {en},
            title = {Kagome superconductivity: conventional or unconventional?},
            publisher = {},
            year = {2024},
            month = {aug},
            note = {ICTS:29296 see, \url{https://scivideos.org/icts-tifr/29296}}
          }
Brian M. Andersen
Talk numberICTS:29296
Source RepositoryICTS-TIFR
Source EventKagome off-scale
Collection

Abstract

I will discuss recent theoretical investigations of disorder response and the spin susceptibility of unconventional superconductivity on the kagome lattice. Despite the existence of a sign-changing gap structure, which sums to zero over the Fermi surface, such unconventional pairing states remain robust to disorder and exhibit a Hebel-Slichter peak in the temperature-dependent spin-relaxation rate. It originates from destructive interference effects peculiar to the kagome lattice. For the same reason, unconventional pairing states on the kagome lattice do not exhibit a neutron resonance peak. These results build on previous theoretical studies of the surprising robustness of unconventional pairing states to disorder on the kagome lattice. Taken together these results imply that unconventional superconductivity on the kagome lattice is deceptive in the sense that its properties may appear similar to conventional non-sign-changing superconductivity. These results may be of relevance to t...