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원자제어 저차원 전자계 연구단
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Nature and topology of the low-energy states in ZrTe5

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Title
Nature and topology of the low-energy states in ZrTe5
Author(s)
Moreschini, L; Johannsen, JC; Berger, H; Denlinger, J; Jozwiack, C; Rotenberg, E; Kim, KS; Bostwick, A; Grioni, M
Publication Date
2016-08
Journal
PHYSICAL REVIEW B, v.94, no.8, pp.081101 -
Publisher
AMER PHYSICAL SOC
Abstract
Long known for its peculiar resistivity, showing a thus far unexplained anomalous peak as a function of temperature, ZrTe5 has recently received rising attention in a somewhat different context. While both theoretical and experimental results seem to point to a nontrivial topology of the low-energy electronic states, there is no agreement on the nature of their topological character. Here, by an angle-resolved photoemission study of the evolution of the band structure with temperature and surface doping, we show that (i) the material presents a van Hove singularity close to the Fermi level, and (ii) no surface states exist at the (010) surface. These findings reconcile band structure measurements with transport results and establish the topology of this puzzling compound ©2016 American Physical Society
URI
http://pr.ibs.re.kr/handle/8788114/4467
DOI
10.1103/PhysRevB.94.081101
ISSN
2469-9950
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > Journal Papers (저널논문)
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