Nature and topology of the low-energy states in ZrTe5

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.


Publié dans:
Physical Review B, 94, 8, 081101
Année
2016
Publisher:
College Pk, Amer Physical Soc
ISSN:
2469-9950
Laboratoires:




 Notice créée le 2016-10-18, modifiée le 2018-12-03


Évaluer ce document:

Rate this document:
1
2
3
 
(Pas encore évalué)