Thermal-driven Lifshitz Transition in layered semimetallic MoTe<sub>2</sub>

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APS March Meeting 2018

Volume 63, Number 1

Monday–Friday, March 5–9, 2018; Los Angeles, California

Session Y14: Topological materials - Topology, symmetry and spin-orbit coupling

11:15 AM–2:15 PM, Friday, March 9, 2018
LACC Room: 304B

Sponsoring Unit: DMP
Chair: Zhiqiang Mao, Tulane University

Abstract ID: BAPS.2018.MAR.Y14.4

Abstract: Y14.00004 : Thermal-driven Lifshitz Transition in layered semimetallic MoTe₂

11:51 AM–12:03 PM

Abstract

Presenter:

Dohyun Kim
(Sungkyunkwan Univ)

Authors:

Dohyun Kim
(Sungkyunkwan Univ)

Sungjong Woo
(Korea Institute for Advanced Study )

Kyungrok Kang
(Sungkyunkwan Univ)

Min Kwon
(Sungkyunkwan Univ)

Suyeon Cho
(Ewha Womans University)

Jun-Ho Lee
(Korea Institute for Advanced Study )

Dongyeun Won
(Sungkyunkwan Univ)

Byungdo Ji
(Sungkyunkwan Univ)

Dong Hoon Keum
(Center for Integrated Nanostructure Physics )

Young-Woo Son
(Korea Institute for Advanced Study )

Heejun Yang
(Center for Integrated Nanostructure Physics )

Electronic, thermal and mechanical (structural) properties of layered transition metal dichalcogenides (TMDC) have shown non-trivial magnetoresistance and quantum states that are promising for next-generation electronics. In particular, unsaturated magnetoresistance and superconductivity have been demonstrated and explained by the exact compensation of electrons and holes in semimetallic MoTe₂, which exhibits a significant temperature variation. Here, we clarify the origin of the temperature-induced non-trivial phenomena by investigating thermal expansion, band structure and phonon features of layered semimetallic MoTe₂. The electron and hole concentrations were found to be largely correlated with the thermal expansion properties of the material along with the role of flexural phonon in the layered material with lattice distortion. Furthermore, resistivity characteristics of the semimetallic MoTe₂ show non-Fermi liquid behaviors.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.Y14.4

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Bulletin of the American Physical Society

APS March Meeting 2018

Volume 63, Number 1

Monday–Friday, March 5–9, 2018; Los Angeles, California

Session Y14: Topological materials - Topology, symmetry and spin-orbit coupling

Abstract: Y14.00004 : Thermal-driven Lifshitz Transition in layered semimetallic MoTe2

Presenter:

Authors:

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Abstract: Y14.00004 : Thermal-driven Lifshitz Transition in layered semimetallic MoTe₂