Publication Date:
2018-05-15
Description:
Author(s): V. B. Zabolotnyy, K. Fürsich, R. J. Green, P. Lutz, K. Treiber, Chul-Hee Min, A. V. Dukhnenko, N. Y. Shitsevalova, V. B. Filipov, B. Y. Kang, B. K. Cho, R. Sutarto, Feizhou He, F. Reinert, D. S. Inosov, and V. Hinkov SmB 6 is a mixed-valence, strongly correlated Kondo insulator. Moreover, its band structure makes it a promising contender in the quest for one of the first systems with topologically nontrivial and correlated surface states. Despite the “topological protection”, surface layer reconstructions can fundamentally change the material’s properties, so that the topological state is expelled into the undisrupted bulk. Following previous indications, the authors combine resonant reflectivity, photoemission, and theory to uncover chemical and valence reconstruction and its dynamics, resulting in boron termination and Sm 3 + subsurface dominance. This work reconciles earlier studies using more surface-sensitive techniques, such as photoemission and scanning tunneling spectroscopy. [Phys. Rev. B 97, 205416] Published Mon May 14, 2018
Keywords:
Surface physics, nanoscale physics, low-dimensional systems
Print ISSN:
1098-0121
Electronic ISSN:
1095-3795
Topics:
Physics
Permalink