Quasiparticle scattering in type-II Weyl semimetal MoTe2. (15th February 2018)

• Record Type: Journal Article
• Authors: Lin, Chun-Liang; Arafune, Ryuichi; Minamitani, Emi; Kawai, Maki; Takagi, Noriaki
• Is Part Of: Journal of physics. Volume 30:Number 10(2018)
• Publication Date: 2018-02-15
• Subjects: Weyl semimetals -- Fermi arc -- quasiparticle interference -- MoTe2 -- scanning tunneling microscopy -- topological matter -- transition metal dichalcogenides; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aaab95
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The electronic structure of type-II Weyl semimetal molybdenum ditelluride (MoTe2 ) is studied by using scanning tunneling microscopy and density functional theory calculations. Through measuring energy-dependent quasiparticle interference (QPI) patterns with a cryogenic scanning tunneling microscope, several characteristic features are found in the QPI patterns. Two of them arise from the Weyl semimetal nature; one is the topological Fermi arc surface state and the other can be assigned to be a Weyl point. The remaining structures are derived from the scatterings relevant to the bulk electronic states. The findings lead to further understanding of the topological electronic structure of type-II Weyl semimetal MoTe2 .