Resolving the discrepancy between charge-Kondo experiment and theory

The conductance of the multichannel charge-Kondo model has recently been measured experimentally [1]. The zero-temperature conductances for up to three channels, as well as the finite-temperature corrections for up to two channels, show good agreement with theoretical predictions [2]. However, for the three-channel case, the measured conductance correction scales as T^{2/5} [1], whereas theory predicts a T^{4/5} dependence [2]. We propose that the experimentally observed T^{2/5} scaling represents the correct leading-order behavior, which arises naturally from the fusion rules of Kondo anyons.





[1] Iftikhar, Z., A. Anthore, A. K. Mitchell, F. D. Parmentier, U. Gennser, A. Ouerghi, A. Cavanna, C. Mora, P. Simon, and F. Pierre. Science 360, no. 6395 (2018): 1315-1320.



[2] Bao, Zhi-qiang, and Fan Zhang. arXiv:1708.09139 (2017).