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The influence of an external electric field on single-layer transition-metal dichalcogenides TX2 with T = Mo, W and X = S, Se (MoWSeS) have been investigated by means of density-functional theory within two-dimensional periodic boundary…

Materials Science · Physics 2017-09-13 Nourdine Zibouche , Pier Philipsen , Thomas Heine , Agnieszka Kuc

We report the realization of field-effect transistors (FETs) made with chemically synthesized multilayer 2D crystal semiconductor MoS2. Electrical properties such as the FET mobility, subthreshold swing, on/off ratio, and contact resistance…

Mesoscale and Nanoscale Physics · Physics 2015-01-30 Wan Sik Hwang , Maja Remskar , Rusen Yan , Tom Kosel , Jong Kyung Park , Byung Jin Cho , Wilfried Haensch , Huili , Xing , Alan Seabaugh , Debdeep Jena

The metastable 1$T'$ phase of layered transition metal dichalcogenides has recently attracted considerable interest due to electronic properties, possible topological electronic phases and catalytic activity. We report a comprehensive…

Materials Science · Physics 2018-04-13 Michele Pizzochero , Oleg V. Yazyev

Transition metal dichalcogenides like MoS2 can exist many phases like the semiconducting 2H and the metallic 1T phases which have shown intriguing properties for energy and electrocatalytic applications. However, the 2H and 1T phases…

Applied Physics · Physics 2019-10-10 Qingqing Ke , Xiao Zhang , Abdelnaby M. Elshahawy , Yating Hu , Qiyuan He , Yongqing Cai , John Wang

We calculate from first principles the electronic structure and optical properties of a number of transition metal dichalcogenide (TMD) bilayer heterostructures consisting of MoS2 layers sandwiched with WS2, MoSe2, MoTe2, BN, or graphene…

Mesoscale and Nanoscale Physics · Physics 2013-09-12 Hannu-Pekka Komsa , Arkady V. Krasheninnikov

Transition metal dichalcogenides exhibit rich phase diagrams dominated by the interplay of superconductivity and charge density waves, which often result in anomalies in the electric transport properties. Here, we employ the ionic gating…

Mesoscale and Nanoscale Physics · Physics 2022-06-28 Erik Piatti , Jessica Montagna Bozzone , Dario Daghero

Layered transition metal dichalcogenides MoTe$_2$ and WTe$_2$ share almost similar lattice constants as well as topological electronic properties except their structural phase transitions. While the former shows a first-order phase…

Mesoscale and Nanoscale Physics · Physics 2017-05-10 Hyun-Jung Kim , Seoung-Hun Kang , Ikutaro Hamada , Young-Woo Son

Over the past few years, there has been a growing interest in layered transition metal dichalcogenides (TMD) such as molybdenum disulfide (MoS2). Most studies so far have focused on the electronic and optoelectronic properties of…

Mesoscale and Nanoscale Physics · Physics 2016-10-03 Morteza Kayyalha , Jesse Maassen , Mark Lundstrom , Li Shi , Yong P. Chen

Single layer (SL) two-dimensional transition metal dichalcogenides (TMDs), such as MoS2, ReS2, WSe2, and MoTe2 have now become the focus of intensive fundamental and applied researches due to their intriguing and tunable physical…

Materials exhibiting multiple stable phases can be used as functional components in electronic and optical applications if the phase transition is controllable. Group-VI transition metal dichalcogenides (TMDs, MX$_2$, where M=Mo, W and X =…

Materials Science · Physics 2019-08-21 Urvesh Patil , Nuala M. Caffrey

Two-dimensional (2D) semiconducting transition metal dichalcogenides (TMDs) are good candidates for high-performance flexible electronics. However, most demonstrations of such flexible field-effect transistors (FETs) to date have been on…

Modulation of electronic properties of materials by electric fields is central to the operation of modern semiconductor devices, providing access to complex electronic behaviors and greater freedom in tuning the energy bands of materials.…

Materials Science · Physics 2024-01-09 Ashwin Ramasubramaniam , Doron Naveh

The layered transition metal dichalcogenides (TMDs) have attracted considerable interest due to their unique electronic and optical properties. Here we report electric field induced strong electroluminescence in multi-layer MoS2 and WSe2.…

Mesoscale and Nanoscale Physics · Physics 2015-10-20 Dehui Li , Rui Cheng , Hailong Zhou , Chen Wang , Anxiang Yin , Yu Chen , Nathan O. Weiss , Yu Huang , Xiangfeng Duan

Two-dimensional transition metal dichalcogenides (TMDs) exhibit an extensive variety of novel electronic properties, such as charge density wave quantum spin Hall phenomena, superconductivity, and Dirac and Weyl semi-metallic properties.…

Strongly Correlated Electrons · Physics 2023-09-15 S. Koley

Two-dimensional transition metal dichalcogenides (TMDs) usually exist in two or more structural phases with different physical properties, and can be repeatedly switched between these phases via different stimuli, making them potentially…

Materials Science · Physics 2020-04-29 Priyanka Manchanda , Pankaj Kumar , Pratibha Dev

Recent demonstrations of controlled switching between different ordered macroscopic states by impulsive electromagnetic perturbations in complex materials have opened some fundamental questions on the mechanisms responsible for such…

Mesoscale and Nanoscale Physics · Physics 2016-03-22 Damjan Svetin , Igor Vaskivskyi , Serguei Brazovskii , Dragan Mihailovic

Single- and few-layer transition metal dichalcogenides have recently emerged as a new family of layered crystals with great interest, not only from the fundamental point of view, but also because of their potential application in ultrathin…

Materials Science · Physics 2014-10-14 R. Roldán , J. A. Silva-Guillén , M. P. López-Sancho , F. Guinea , E. Cappelluti , P. Ordejón

Layered two-dimensional (2D) materials exhibit unique properties, expanding opportunities in material design. We investigate MX$_2$ transition metal dichalcogenides (TMDCs) (M = Mo, W; X = S, Se, Te) in homo- and heterobilayers with…

Materials Science · Physics 2025-03-13 Yu-Hsiu Lin , William P. Comaskey , Jose L. Mendoza-Cortes

Moire superlattices of transition metal dichalcogenide (TMD) bilayers have been shown to host correlated electronic states, which arises from the interplay of emergent moire potential and long-range Coulomb interactions. Here we…

Strongly Correlated Electrons · Physics 2021-04-28 Yang Zhang , Tongtong Liu , Liang Fu

Transition metal dichalcogenide MoS2 is a two-dimensional material, attracting much attention for next-generation applications thanks to rich functionalities stemmed from the crystal structure. Many experimental and theoretical works have…