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Quantum critical scaling for finite-temperature Mott-like metal-insulator crossover in few-layered MoS2

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Title
Quantum critical scaling for finite-temperature Mott-like metal-insulator crossover in few-layered MoS2
Author(s)
Byoung Hee Moon; Han, Gang Hee; Radonjic, Milos M.; Ji, Hyunjin; Dobrosavljevic, Vladimir
Publication Date
2020-12
Journal
Physical Review b, v.102, no.24, pp.1 - 9
Publisher
AMER PHYSICAL SOC
Abstract
The dominant role of strong electron-electron interactions in driving two-dimensional metal-insulator transitions has long been debated, but its clear experimental demonstration is still not available. Here, we examine the finite-temperature transport behavior of few-layered MoS2 material in the vicinity of the density-driven metal-insulator transition, revealing previously overlooked universal features characteristic of strongly correlated electron systems. Our scaling analysis, based on the Wigner-Mott theoretical viewpoint, conclusively demonstrates that the transition is driven by strong electron-electron interactions and not disorder, in striking resemblance to what is seen in other Mott systems. Our results provide compelling evidence that transition-metal dichalcogenides provide an ideal testing ground, and should open an exciting avenue for the study of strong correlation physics.
URI
https://pr.ibs.re.kr/handle/8788114/9088
DOI
10.1103/PhysRevB.102.245424
ISSN
2469-9950
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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