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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…

Two-dimensional materials, such as transition metal dichalcogenides (TMDCs), have the potential to revolutionize the field of electronics and photonics due to their unique physical and structural properties. This research presents a novel…

In two-dimensional (2D) semiconducting transition metal dichalcogenides (TMDs), new electronic phenomena such as tunable band gaps and strongly bound excitons and trions emerge from strong many-body effects, beyond spin-orbit coupling- and…

Topological semimetals with superconducting properties provide an emergent platform to explore the properties of topological superconductors. We report magnetization, and magneto-transport measurements on high quality single crystals of…

Superconductivity · Physics 2022-06-29 M. Singh , P. Saha , V. Nagpal , S. Patnaik

The transition metal dichalcogenide PdTe$_2$ was recently shown to be a unique system where a type II Dirac semimetallic phase and a superconducting phase co-exist. This observation has led to wide speculation on the possibility of the…

Superconductivity · Physics 2018-01-31 Shekhar Das , Amit , Anshu Sirohi , Lalit Yadav , Sirshendu Gayen , Yogesh Singh , Goutam Sheet

We study the conduction band spin splitting that arises in transition metal dichalcogenide (TMD) semiconductor monolayers such as MoS$_2$, MoSe$_2$, WS$_2$ and WSe$_2$ due to the combination of spin-orbit coupling and lack of inversion…

Materials Science · Physics 2014-01-01 K. Kośmider , J. W. González , J. Fernández-Rossier

Transition metal dichalcogenides (TMDs) are quasi-two-dimensional layered compounds exhibiting strongly competing charge-density wave (CDW) and superconducting (SC) order parameters (OPs). The weak van der Waals interlayer bonding between…

Superconductivity · Physics 2015-05-26 Richard A. Klemm

A monolayer of transition metal dichalcogenide (TMDC) is shown to be capable of supporting a guided optical mode below the exciton resonance, a two-dimensional exciton polariton. This visible or near IR mode is confined roughly within a…

Optics · Physics 2015-05-05 Jacob B. Khurgin

Chalcogen vacancies in the semiconducting monolayer transition-metal dichalcogenides (TMDs) have frequently been invoked to explain a wide range of phenomena, including both unintentional p-type and n-type conductivity, as well as sub-band…

Materials Science · Physics 2024-02-27 Shoaib Khalid , Bharat Medasani , John L. Lyons , Darshana Wickramaratne , Anderson Janotti

The two-dimensional transition-metal dichalcogenides (2D TMDCs) are an intriguing platform for studying light-matter interactions because they combine the electronic properties of conventional semiconductors with the optical resonances…

Mesoscale and Nanoscale Physics · Physics 2022-05-02 Aaron H. Rose , Taylor J. Aubry , Hanyu Zhang , Jao van de Lagemaat

One of the main characteristics of the new family of two-dimensional crystals of semiconducting transition metal dichalcogenides (TMD) is the strong spin-orbit interaction, which makes them very promising for future applications in…

Mesoscale and Nanoscale Physics · Physics 2015-11-11 R. Roldán , M. P. López-Sancho , E. Cappelluti , J. A. Silva-Guillén , P. Ordejón , F. Guinea

The nanoscale moir\'e pattern formed at 2D transition metal dichalcogenide crystal (TMDC) heterostructures provides periodic trapping sites for excitons, which is essential for realizing various exotic phases such as artificial exciton…

Mesoscale and Nanoscale Physics · Physics 2023-05-02 Kushal Rijal , Stephanie Amos , Pavel Valencia-Acuna , Fatimah Rudayni , Neno Fuller , Hui Zhao , Hartwin Peelaers , Wai-Lun Chan

Localized electronic states formed inside the band gap of a semiconductor due to crystal defects can be detrimental to the material's optoelectronic properties. Semiconductors with lower tendency to form defect induced deep gap states are…

In order to discuss the exciton fine-structure of transition-metal dichalcogenides mono-layers, excitons are first defined in the subspace of electron- and hole states, including the lowest conduction band (LCB) and the uppermost valence…

Mesoscale and Nanoscale Physics · Physics 2019-06-25 Pierre Gilliot , Mathieu Gallart , Bernd Hönerlage

We study possible superconducting states in transition metal dichalcogenide (TMD) monolayers, assuming an on-site pairing potential that includes both intra- and inter-orbital terms. We find that if the mirror symmetry with respect to the…

Superconductivity · Physics 2021-09-24 Gilad Margalit , Erez Berg , Yuval Oreg

The two-dimensional character and reduced screening in monolayer transition-metal dichalcogenides (TMDs) lead to the ubiquitous formation of robust excitons with binding energies orders of magnitude larger than in bulk semiconductors.…

Materials Science · Physics 2017-09-26 Benedikt Scharf , Gaofeng Xu , Alex Matos-Abiague , Igor Žutić

Two dimensional (2D) transition-metal dichalcogenide (TMD) based semiconductors have generated intense recent interest due to their novel optical and electronic properties, and potential for applications. In this work, we characterize the…

Monolayer transition-metal dichalcogenides (TMDCs) have recently emerged as possible candidates for valleytronic applications, as the spin and valley pseudospin are directly coupled and stabilized by a large spin splitting. In these…

Recently, transition metal dichalcogenides (TMDCs) semiconductors have been utilized for investigating quantum phenomena because of their unique band structures and novel electronic properties. In a quantum dot (QD), electrons are confined…

Mesoscale and Nanoscale Physics · Physics 2020-03-04 Gang Luo , Zhuo-Zhi Zhang , Hai-Ou Li , Xiang-Xiang Song , Guang-Wei Deng , Gang Cao , Ming Xiao , Guo-Ping Guo

Monolayer Transition Metal Dichalcogenides (TMDCs) are promising candidates for quantum technologies, such as quantum dots, because they are truly two-dimensional semiconductors with a direct band gap. In this work, we analyse theoretically…

Mesoscale and Nanoscale Physics · Physics 2018-02-28 Alessandro David , Guido Burkard , Andor Kormányos