Anomalous conductivity near percolative metal-insulator transition in monolayer MoS<sub>2</sub>

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APS March Meeting 2019

Volume 64, Number 2

Monday–Friday, March 4–8, 2019; Boston, Massachusetts

Session C06: Electronic States in S and Te Chalcogenides

2:30 PM–4:54 PM, Monday, March 4, 2019
BCEC Room: 109A

Sponsoring Unit: DCMP
Chair: Rico Schoenemann, National High Magnetic Field Laboratory

Abstract: C06.00006 : Anomalous conductivity near percolative metal-insulator transition in monolayer MoS₂

3:30 PM–3:42 PM

Abstract

Presenter:

Byoung Hee Moon
(Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS))

Authors:

Byoung Hee Moon
(Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS))

Jung Jun Bae
(Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS))

Gang Hee Han
(Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS))

Hyun Kim
(Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS))

Homin Choi
(Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS))

Young Hee Lee
(Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS))

Conductivity of the insulating phase increases generally upon increasing a drain-source voltage due to the field-enhanced hopping or heating effect. Here, we report the opposite behavior, and anomalous metallic to insulating phase transition driven by a voltage at low voltage regime in monolayer molybdenum disulfide. We ascribe these features to the inhomogeneous state of the system in which the transport is governed by a percolation. At the higher voltage regime, the insulating phase is transformed further to the metallic phase, exhibiting unique multi-phases in this system. In this talk, we discuss these anomalous behaviors and their implications in a metal-insulator transition in two-dimension.

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Bulletin of the American Physical Society

APS March Meeting 2019

Volume 64, Number 2

Monday–Friday, March 4–8, 2019; Boston, Massachusetts

Session C06: Electronic States in S and Te Chalcogenides

Abstract: C06.00006 : Anomalous conductivity near percolative metal-insulator transition in monolayer MoS2

Presenter:

Authors:

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Abstract: C06.00006 : Anomalous conductivity near percolative metal-insulator transition in monolayer MoS₂