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Transition metal dichalcogenides (TMDs) host multiple competing structural and electronic phases, making them an ideal platform for constructing polytype heterostructures with emergent quantum properties. However, controlling phase…

Materials Science · Physics 2025-12-03 Yanyan Geng , Manyu Wang , Shumin Meng , Shuo Mi , Chang Li , Huiji Hu , Jianfeng Guo , Rui Xu , Fei Pang , Wei Ji , Weichang Zhou , Zhihai Cheng

To take advantage of the exceptional properties of atomically thin transition metal dichalcogenides (TMDC) for advanced devices and catalysts, integration with metallic surfaces is an efficacious approach for facilitating charge carrier…

Mesoscale and Nanoscale Physics · Physics 2024-08-27 Tao Yang , Zhipeng Huang , Stephan Sleziona , Eckart Hasselbrink , Peter Kratzer , Marika Schleberger , R. Kramer Campen , Yujin Tong

1T-TaS$_2$ exhibits several resistivity phases due to the modulation of charge density wave (CDW). The fact that such phase transition can be driven electrically has attracted a lot of attention in the recent past towards…

Materials Science · Physics 2023-07-21 Mehak Mahajan , Kausik Majumdar

Two-dimensional (2D) materials are a new class of materials with interesting physical properties and ranging from nanoelectronics to sensing and photonics. In addition to graphene, the most studied 2D material, monolayers of other layered…

Mesoscale and Nanoscale Physics · Physics 2013-06-25 Branimir Radisavljevic , Andras Kis

Associating the presence of atomic vacancies to excited-state transport phenomena in two dimensional semiconductors is of emerging interest, and demands detailed understanding of the involved exciton transitions. Here we study the effect of…

Mesoscale and Nanoscale Physics · Physics 2023-10-05 Daniel Hernangómez-Pérez , Amir Kleiner , Sivan Refaely-Abramson

We report a significant enhancement of superconducting transition temperature ($\textit{T}_\textrm{c}$) of transition metal dichalcogenide (TMD) superconductor $\textrm{NbTe}_2$ from 0.56 K to 2.8 K. Detailed x-ray structure analysis…

A 3D layered system of charges with logarithmic interaction parallel to the layers and random dipoles is studied via a novel variational method and an energy rationale which reproduce the known phase diagram for a single layer. Increasing…

Condensed Matter · Physics 2016-08-31 Baruch Horovitz , Pierre Le Doussal

Monolayers (ML) of Group-6 transition-metal dichalcogenides (TMDs) are semiconducting two-dimensional materials with direct bandgap, showing promising applications in various fields of science and technology, such as nanoelectronics and…

Computational Physics · Physics 2020-06-24 Mohammad Bahmani , Mahdi Faghihnasiri , Michael Lorke , Agnieszka-Beata Kuc , Thomas Frauenheim

Cross-plane thermal conductivity in homogeneous transition metal dichalcogenides (TMDs) exhibits a strong dependence on twist angle, originating from atomic reconstruction within moir\'e superlattices. This reconstruction redistributes…

Materials Science · Physics 2025-05-02 Wenwu Jiang , Ting Liang , Hekai Bu , Jianbin Xu , Wengen Ouyang

2$H$-TaSe$_2$ has been one of unique transition metal dichalcogenides exhibiting several phase transitions due to a delicate balance among competing electronic ground states. An unusual metallic state at high-$T$ is sequentially followed by…

Superconductivity · Physics 2016-03-21 D. Bhoi , S. Khim , W. Nam , B. S. Lee , Chanhee Kim , B. -G. Jeon , B. H. Min , S. Park , Kee Hoon Kim

Efficient heat dissipation to the substrate is crucial for optimal device performance in nanoelectronics. We develop a theory of electronic thermal boundary conductance (TBC) mediated by remote phonon scattering for the single-layer…

Mesoscale and Nanoscale Physics · Physics 2020-09-28 Zhun-Yong Ong , Gang Zhang , Linyou Cao , Yong-Wei Zhang

Using density functional theory with added on-site interactions (DFT+U), we study the electronic structure of bulk, monolayer, and bilayer of the layered transition-metal dichalcogenide $1T-TaS_2$. We show that a two-dimensional…

Materials Science · Physics 2015-06-18 Pierre Darancet , Andrew J. Millis , Chris A. Marianetti

Despite the concerted effort of several research groups, a detailed experimental account of defect dynamics in high-quality single- and few-layer transition metal dichalcogenides remain elusive. In this paper we report an experimental study…

Mesoscale and Nanoscale Physics · Physics 2019-07-04 Suman Sarkar , K. Lakshmi Ganapathi , Sangeneni Mohan , Aveek Bid

1T-TaS$_2$ undergoes successive phase transitions upon cooling and eventually enters an insulating state of mysterious origin. Some consider this state to be a band insulator with interlayer stacking order, yet others attribute it to Mott…

Strongly Correlated Electrons · Physics 2020-08-26 Y. D. Wang , W. L. Yao , Z. M. Xin , T. T. Han , Z. G. Wang , L. Chen , C. Cai , Yuan Li , Y. Zhang

Despite being usually considered two competing phenomena, charge-density-wave and superconductivity coexist in few systems, the most emblematic one being the transition metal dichalcogenide 2H-NbSe$_2$. This unusual condition is responsible…

Van der Waals heterostructures (VDWHs) exhibit rich properties and thus has potential for applications, and charge transfer between different layers in a heterostructure often dominates its properties and device performance. It is thus…

Strongly Correlated Electrons · Physics 2018-04-04 Q. Yao , D. W. Shen , C. H. P. Wen , C. Q. Hua , L. Q. Zhang , N. Z. Wang , X. H. Niu , Q. Y. Chen , P. Dudin , Y. H. Lu , Y. Zheng , X. H. Chen , X. G. Wan , D. L. Feng

Two-dimensional (2D) layered transition metal dichalcogenides (TMDCs) are promising memristive materials for neuromorphic computing systems as they could solve the problem of the excessively high energy consumption of conventional von…

Applied Physics · Physics 2025-05-21 Benjamin Spetzler , Dilara Abdel , Frank Schwierz , Martin Ziegler , Patricio Farrell

The dynamics of the photoinduced commensurate to incommensurate charge density wave (CDW) phase transition in 4Hb-TaSe2 are investigated by femtosecond electron diffraction. In the perturbative regime the CDW reforms on a 150 ps timescale,…

Strongly Correlated Electrons · Physics 2015-06-11 N. Erasmus , M. Eichberger , K. Haupt , I. Boshoff , G. Kassier , R. Birmurske , H. Berger , J. Demsar , H. Schwoerer

Semiconducting transition metal dichalcogenides (TMDs) have emerged as materials that can be used to realize two-dimensional (2D) crystals possessing rather unique transport and optical properties. Most research has so far focused on sulfur…

Heterostructures comprising van der Waals (vdW) stacked transition metal dichalcogenide (TMDC) monolayers are a fascinating class of two-dimensional (2D) materials with unique properties. The presence of interlayer excitons, where the…

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