We have studied in-situ cleaved (0001) surfaces of the magnetic Weyl semimetal MnSn by low-temperature scanning tunneling microscopy and spectroscopy (STM/S). It was found that freshly cleaved MnSn surfaces are covered with unknown clusters, and the application of voltage pulses in the tunneling condition was needed to achieve atomically flat surfaces. STM topographs taken on the flat terrace show a bulk-terminated 1 × 1 honeycomb lattice with the Sn site brightest. First-principles calculations reveal that the brightest contrast at the Sn site originates from the surrounding surface Mn d orbitals. Tunneling spectroscopy performed on the as-cleaved and voltage-pulsed surfaces show a prominent semimetal valley near the Fermi energy.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6609646PMC
http://dx.doi.org/10.1038/s41598-019-45958-7DOI Listing

Publication Analysis

Top Keywords

scanning tunneling
8
tunneling microscopy
8
microscopy cleaved
4
cleaved mnsn0001
4
mnsn0001 surface
4
surface studied
4
studied in-situ
4
in-situ cleaved
4
cleaved 0001
4
surfaces
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!