Giant magnetoresistance, three-dimensional Fermi surface and origin of resistivity plateau in YSb semimetal.

ABSTRACT: Very strong magnetoresistance and a resistivity plateau impeding low temperature divergence due to insulating bulk are hallmarks of topological insulators and are also present in topological semimetals where the plateau is induced by magnetic field, when time-reversal symmetry (protecting surface states in topological insulators) is broken. Similar features were observed in a simple rock-salt-structure LaSb, leading to a suggestion of the possible non-trivial topology of 2D states in this compound. We show that its sister compound YSb is also characterized by giant magnetoresistance exceeding one thousand percent and low-temperature plateau of resistivity. We thus performed in-depth analysis of YSb Fermi surface by band calculations, magnetoresistance, and Shubnikov-de Haas effect measurem

SUBMITTER: Pavlosiuk O 

PROVIDER: S-EPMC5146676 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature