Events at the University of Science and Technology of China

Majorana zero mode under a microscope

  • [2018-01-07]

    Speaker: Prof. LI Jian
    Westlake Institute for Advanced Study
    Time: 2018-01-10 14:00
    Place: ROOM 9004, Hefei National Laboratory Building


      Ferromagnetic chains grown on top of conventional superconductors (or, Yu-Shiba-Rusinov (YSR) chains) pose an interesting and promising platform for Majorana zero modes, which in turn is crucial in realizing feasible topological quantum computation. In this talk, I will first review the recent experimental and theoretical development of the study of Majorana zero modes in this platform [1,2,3,4]. Then I will propose a robust spin signature to distinguish Majorana zero modes from trivial YSR states accidentally tuned to zero energy due to strong local potential. This signature is rooted in two sum rules that dictate the distribution of spin densities in a superconducting state with respect to a normal state, and has been recently detected with the spin-polarized scanning tunneling microscope technique which implicitly takes advantage of these sum rules [5,6].
    [1] Science 346, 602 (2014).
    [2] Physical Review B 90, 235433 (2014).
    [3] Nature Communications 7, 10395 (2016).
    [4] Nature Physics 13, 286 (2017).
    [5] Science, eaan3670 (2017)
    [6] arXiv:1709.05967.

    Organizer: Hefei National Laboratory for Physical Sciences at the Microscale



Highlight of USTC

According to the latest Nature Publishing Index (NPI) Asia-Pacific and The Nature Publishing Index China, University of Science and Technology of China tops in Chinese universities again. The rankings are based on the number of papers that were published in Nature journals during the last 12 months.


This article came from News Center of USTC.