@article{82a494a4a59c46388c649d3f59ffb082,
title = "Robust Surface States and Coherence Phenomena in Magnetically Alloyed SmB6",
abstract = "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 states. Here we investigate the surface and bulk electronic properties of magnetically alloyed Sm1-xMxB6 (M=Ce, Eu), using angle-resolved photoemission spectroscopy and complementary characterization techniques. Remarkably, topologically nontrivial bulk and surface band structures are found to persist in highly modified samples with up to 30% Sm substitution and with an antiferromagnetic ground state in the case of Eu doping. The results are interpreted in terms of a hierarchy of energy scales, in which surface state emergence is linked to the formation of a direct Kondo gap, while low-temperature transport trends depend on the indirect gap.",
author = "Lin Miao and Min, {Chul Hee} and Yishuai Xu and Zengle Huang and Kotta, {Erica C.} and Rourav Basak and Song, {M. S.} and Kang, {B. Y.} and Cho, {B. K.} and K. Ki{\ss}ner and F. Reinert and Turgut Yilmaz and Elio Vescovo and Chuang, {Yi De} and Weida Wu and Denlinger, {Jonathan D.} and Wray, {L. Andrew}",
note = "Funding Information: This research used resources of the Advanced Light Source, a U.S. DOE Office of Science User Facility under Contract No. DE-AC02-05CH11231. Operation of the ESM beam line at the National Synchrotron Light Source is supported by DOE Office of Science User Facility Program operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-AC02-98CH10886. Work at N. Y. U. was supported by the MRSEC Program of the National Science Foundation under Grant No. DMR-1420073. The STM work at Rutgers is supported by NSF under Grant No. DMR-1506618. C.-H. M., K. K., and F. R. acknowledge financial support from the DFG through SFB1170 “tocotronics” and the W{\"u}rzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter—ct.qmat (EXC 2147, Project ID 39085490). M. S. S., B. Y. K., and B. K. C. were supported by National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT and Future Planning (No. NRF-2017R1A2B2008538). L. M. is supported by the National Natural Science Foundation of China (Grants No. U2032156 and No. 12004071) and Natural Science Foundation of Jiangsu Province, China (Grant No. BK20200348). Publisher Copyright: {\textcopyright} 2021 American Physical Society. ",
year = "2021",
month = mar,
day = "31",
doi = "10.1103/PhysRevLett.126.136401",
language = "English (US)",
volume = "126",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "13",
}