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In search of an improved strategy to form low resistance contacts to MoS2 and related semiconducting transition metal dichalcogenides, we use ab initio density functional electronic structure calculations in order to determine the…

Mesoscale and Nanoscale Physics · Physics 2019-05-03 Zhibin Gao , Zhixian Zhou , David Tomanek

Several layered transition metal borides can now be realized by a simple and general fabrication method [Fokwa et al.,Adv. Mater. 2018, 30, 1704181],inspiring our interest to transition metal borides monolayer. Here, we predict a new…

Materials Science · Physics 2019-11-05 Yipeng An , Shijing Gong , Yusheng Hou , Jie Li , Ruqian Wu , Zhaoyong Jiao , Tianxing Wang , Jutao Jiao

Transition metal dichalcogenides (TMDs) are layered materials which show excellent potential for nanoelectronic and optoelectronic applications. However, as many of the exciting features of these materials are controlled by the anharmonic…

Materials Science · Physics 2021-08-13 Suvodeep Paul , Saheb Karak , Annie Mathew , Ankita Ram , Surajit Saha

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

The problem of screening the Coulomb interaction between charge carriers in type II heterostructures based on transition metal dichalcogenides is Analytically solved. At a sufficiently high density of charge carriers, the density dependence…

Mesoscale and Nanoscale Physics · Physics 2022-05-11 Pavel V. Ratnikov

Transition metal dichalcogenides (TMDs) are regarded as a possible materials platform for quantum information science and related device applications. In TMD monolayers, the dephasing time and inhomogeneity are crucial parameters for any…

Transition metal dichalcogenide (TMD) monolayers attract great attention due to their specific structural, electronic and mechanical properties. The formation of their lateral heterostructures allows a new degree of flexibility in…

Materials Science · Physics 2020-09-29 Sadegh Imani Yengejeh , William Wen , Yun Wang

This work presents a first-principles study of the optoelectronic properties of vertically-stacked bilayer heterostructures composed of 2D transition-metal dichalcogenides (TMDs). The calculations are performed using the density-functional…

Materials Science · Physics 2025-01-15 Khushboo Dange , Rachana Yogi , Alok Shukla

Due to the absence of interlayer coupling and inversion symmetry, transition metal dichalcogenide (MX$_2$) semiconductor monolayers exhibit novel properties that are distinctly different from their bulk crystals such as direct optical band…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Chung-Yu Wang , Guang-Yu Guo

Interlayer coupling can significantly influence the physical properties of layered transition metal compounds. The superconductivity in layered Mo$_2$C systems, belonging to the emergent family of MXene, has garnered considerable attention.…

Superconductivity · Physics 2024-02-22 Can Hong , Danhong Wu , Xi-Bo Li , Feipeng Zheng

We investigate the role of long-range Coulomb interactions in $M$-valley moir\'es using the self-consistent Hartree-Fock approximation. This platform was recently proposed [Nature 643, 376 (2025) and arXiv:2411.18828 (2024)] as a new class…

Mesoscale and Nanoscale Physics · Physics 2025-09-24 Christophe De Beule , Liangtao Peng , E. J. Mele , Shaffique Adam

This study introduces an anisotropic interfacial potential that provides an accurate description of the van der Waals (vdW) interactions between water and hexagonal boron nitride (h-BN) at their interface. Benchmarked against the strongly…

Chemical Physics · Physics 2023-06-14 Zhicheng Feng , Zhangke Lei , Yuanpeng Yao , Jianxin Liu , Bozhao Wu , Wengen Ouyang

We present a density functional theory parametrized hybrid k$\cdot$p tight binding model for electronic properties of atomically thin films of transition-metal dichalcogenides, 2H-$MX_2$ ($M$=Mo, W; $X$=S, Se). We use this model to analyze…

Mesoscale and Nanoscale Physics · Physics 2018-08-07 David A. Ruiz-Tijerina , Mark Danovich , Celal Yelgel , Viktor Zólyomi , Vladimir I. Fal'ko

Van der Waals (vdW) heterobilayers formed by two-dimensional (2D) transition metal dichalcogenides (TMDCs) created a promising platform for various electronic and optical properties. ab initio band results indicate that the band offset of…

Materials Science · Physics 2020-09-04 Yuanyuan Wang , Fengping Li , Wei Wei , Baibiao Huang , Ying Dai

We analyse van der Waals interactions between a pair of dielectrically anisotropic plane-layered media interacting across a dielectrically isotropic solvent medium. We develop a general formalism based on transfer matrices to investigate…

Soft Condensed Matter · Physics 2016-07-29 Bing-Sui Lu , Rudolf Podgornik

In-plane heterojunction tunnel field effect transistors based on monolayer transition metal dichalcogenides are studied by means of self-consistent non-equilibrium Green's functions simulations and an atomistic tight-binding Hamiltonian. We…

Mesoscale and Nanoscale Physics · Physics 2018-11-14 Jean Choukroun , Marco Pala , Shiang Fang , Efthimios Kaxiras , Philippe Dollfus

Two-dimensional transition metal dichalcogenides (MX2)/metal oxide heterostructures have shown unique physical properties, making them promising materials for various applications ranging from photocatalysis to solar energy conversion.…

Materials Science · Physics 2016-12-05 Ke Yang , Wei-Qing Huang , Wangyu Hu , Gui-Fang Huang , Shuangchun Wen

Interlayer excitons (IXs) in hetero-bilayers of transition metal dichalcogenides (TMDs) represent an exciting emergent class of long-lived dipolar composite bosons in an atomically thin, near-ideal two-dimensional (2D) system. The…

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

Twisted multilayer transition metal dichalcogenides (TMDs) are a promising platform for realizing topological exciton phases. Here we propose that twisted TMD heterotrilayers WX$_2$/MX$_2$/WX$_2$ with layer symmetry represents a realistic…

Mesoscale and Nanoscale Physics · Physics 2025-04-15 Ze-Hong Guo , Tao Yan , Jin-Zhu Zhao , Yuan-Jun Jin , Qizhong Zhu