Asymmetric Electron Scattering at Bearded Edges of Honeycomb-structured Nickel Nanoislands

Yen-Hui Lin^1*, Chia-Ju Chen¹, Ta-Yu Yeh¹, Shih-Tang Huang¹, Deng-Sung Lin¹, Pin-Jui Hsu¹

¹Department of Physics, National Tsing Hua University, Hisnchu, Taiwan

* Presenter:Yen-Hui Lin, email:s105022805@m105.nthu.edu.tw

Magnetic nanostructures grown on the s-wave superconductors have received great interests recently because of the potential applications in quantum computation. In this study, we have grown the Ni islands on Pb(111) surface by depositing Ni at low substrate temperature first, and then followed by a post annealing. According to the STM atomic resolution image, Ni islands with the honeycomb lattice have been successfully fabricated. There are two types of bearded edges on the Ni islands, corresponding to fcc-site-terminated and hcp-site-terminated, respectively. From spatial QPI mapping, the backscattering events on Pb(111) surface electrons only appear at the fcc-site-terminated edge.

Keywords: Asymmetric Electron Scattering, Scanning Tunneling Spectroscopy, Honeycomb lattice, Nickel, Lead