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Spectromicroscopic measurement of surface and bulk band structure interplay in a disordered topological insulator
Erica Kotta, Lin Miao, Yishuai Xu +9
Topological insulators are bulk semiconductors that manifest in-gap massless Dirac surface states due to the topological bulk-boundary correspondence principle [1-3]. These surface…
Magnetic imaging of antiferromagnetic domain walls
Paul M. Sass, Wenbo Ge, Jiaqiang Yan +3
The control of domain walls or spin textures is crucial for spintronic applications of antiferromagnets. Despite many efforts, it has been challenging to directly visualize antifer…
Giant topological Hall effect in correlated oxide thin films
Lorenzo Vistoli, Wenbo Wang, Anke Sander +15
Strong electronic correlations can produce remarkable phenomena such as metal-insulator transitions and greatly enhance superconductivity, thermoelectricity, or optical non-lineari…
Pb-doped p-type BiSe thin films via interfacial engineering
Jisoo Moon, Zengle Huang, Weida Wu +1
Due to high density of native defects, the prototypical topological insulator (TI), BiSe, is naturally n-type. Although BiSe can be converted into p-type by substit…
Intrinsic superstructure near atomically clean armchair-type step edge of graphite
Wenhan Zhang, Zheng Ju, Weida Wu
We investigated the electronic superstructure of graphite surface in the vicinity to monoatomic armchair step edges with scanning tunneling microscopy and spectroscopy. Only the ($…
Robust surface states and coherence phenomena in magnetically alloyed SmB6
Lin Miao, Chul-Hee Min, Yishuai Xu +14
Samarium hexaboride is a candidate for the topological Kondo insulator state, in which Kondo coherence is predicted to give rise to an insulating gap spanned by topological surface…