Observation of Topological Superconductivity on the Surface of an Iron-Based Superconductor


© Scienta Omicron

Illustration and summary of the results proving the topological Fe based superconductor.

Author: Dr Koichiro Yaji, Prof. Shik Shin Institute: ''ISSP, The University of Tokyo'' Science
URL: https://doi.org/10.1126/science.aan4596
Date: 2018
Instruments: DA30-L, 3D Spin VLEED, VUV5k

Topological superconductors are predicted to host exotic Majorana states that obey non-Abelian statistics and can be used to implement a topological quantum computer. By using high-resolution spin-resolved and angle-resolved photoelectron spectroscopy, P. Zhang et al., Science 10.1126/science.aan4596 (2018), are likely the first to show that the surface states of FeTe0.55Se0.45 are 2D topologically superconducting. The result is illustrated in Figure 1.