Magnetic Atom Assembly on Proximity-Induced Superconducting Honeycomb-Structured Ni Nanoislands

Tzu-Hsuan Lin^1*, Yen-Hui Lin¹, Nitin Kumar¹, Chia-Ju Chen¹, Guan-Yu Chen¹, Pin-Jui Hsu¹

¹Physics, National Tsing Hua University, Hsinchu, Taiwan

* Presenter:Tzu-Hsuan Lin, email:squirrel0939@gmail.com

When magnetic impurities are placed in the proximity to a superconductor, the Yu-Shiba-Rusinov bound states can appear inside the superconducting gap. We have fabricated Ni nanoislands with honeycomb lattice on Pb(111) substrate at low temperature, and we have resolved the superconductivity with a slightly enhanced gap size on the honeycomb-structured Ni nanoislands via the proximity effect. Finally, we have deposited Fe and Co atoms on top of honeycomb-structured Ni nanoislands, and investigated the emergence of nontrivial in-gap states.

Keywords: Scanning Tunneling Microscopy, Honeycomb-structured, Proximity effect, Superconductivity, Stand wave pattern