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Despite its extremely weak intrinsic spin-orbit coupling (SOC), graphene has been shown to acquire considerable SOC by proximity coupling with exfoliated transition metal dichalcogenides (TMDs). Here we demonstrate strong induced Rashba SOC…

We have studied the optical conductivity of two-dimensional (2D) semiconducting transition metal dichalcogenides (STMDC) using ab-initio density functional theory (DFT). We find that this class of materials presents large optical response…

Materials Science · Physics 2013-11-06 A. Carvalho , R. M. Ribeiro , A. H. Castro Neto

This study investigates the interband conductivity for nodal line semimetals (NLSMs) in the presence of spin-orbit coupling (SOC) beyond the clean limit, where the disorder reshapes the transport properties. The SOC breaks spin degeneracy,…

Mesoscale and Nanoscale Physics · Physics 2026-03-03 Vivek Pandey , Monu , Pankaj Bhalla

Transition metal dichalcogenide (TMD) monolayers MXY (M=Mo, W, X(not equal to)Y=S, Se, Te) are two-dimensional polar semiconductors. Setting WSeTe monolayer as an example and using density functional theory calculations, we investigate the…

Computational Physics · Physics 2017-04-26 Qun-Fang Yao , Jia Cai , Wen-Yi Tong , Shi-Jing Gong , Ji-Qing Wang , Xian-gang Wan , Chun-Gang Duan , J. H. Chu

The emergence of a second dome in the superconducting phase through pressure-driven manipulation of crystal structures in materials has attracted considerable attention. Transition metal chalcogenides (TMCs) represent a highly promising…

Several experiments reveal the inhomogeneous character of the superconducting state that occurs when the carrier density of the two-dimensional electron gas formed at the LaXO3/SrTiO3 (X=Al or Ti) interface is tuned above a threshold value…

Mesoscale and Nanoscale Physics · Physics 2015-02-27 S. Caprara , D. Bucheli , N. Scopigno , N. Bergeal , J. Biscaras , S. Hurand , J. Lesueur , M. Grilli

The induction of unconventional superconductivity by twisting two layers of graphene a small angle was groundbreaking1, and since then has attracted widespread attention to novel phenomena caused by lattice or angle mismatch between…

Mesoscale and Nanoscale Physics · Physics 2020-09-21 Yuqi Wang , Soroush Arabi , Klaus Kern , Markus Ternes

Single-layer transition metal dichalcogenides (TMDCs) can adopt two distinct structures corresponding to different coordination of the metal atoms. TMDCs adopting the T-type structure exhibit a rich and diverse set of phenomena, including…

Mesoscale and Nanoscale Physics · Physics 2020-07-29 Daniel T. Larson , Wei Chen , Steven B. Torrisi , Jennifer Coulter , Shiang Fang , Efthimios Kaxiras

1$T$-TaS$_2$ is the only insulating transition-metal dichalcogenide (TMD) with an odd number of electrons per unit cell. This insulating state is non-magnetic, making it a potential spin-liquid candidate. The unusual electronic behavior…

Strongly Correlated Electrons · Physics 2024-06-28 Amir Dalal , Jonathan Ruhman , Jörn W. F. Venderbos

Achieving electrostatic control of quantum phases is at the frontier of condensed matter research. Recent investigations have revealed superconductivity tunable by electrostatic doping in twisted graphene heterostructures and in…

We report a discovery of superconductivity with Tc = 5.5 K in Nb2PdxSe5, in which one-dimensional (1D) Nb-Se chains existing along the b-direction hybridize each other to form the conducting b-c* plane. The magnetic susceptibility and…

Combination of different nontrivial topological states in a single material is capable of realizing multiple functionalities and exotic physics, but such materials are still very sparse. We report herein the results of magnetotransport…

Strongly Correlated Electrons · Physics 2020-05-27 Hao Su , Xianbiao Shi , Wei Xia , Hongyuan Wang , Xuesong Hanli , Zhenhai Yu , Xia Wang , Zhiqiang Zou , Na Yu , Weiwei Zhao , Gang Xu , Yanfeng Guo

MoTe$_2$ is an exfoliable transition metal dichalcogenide (TMD) which crystallizes in three symmetries, the semiconducting trigonal-prismatic $2H-$phase, the semimetallic $1T^{\prime}$ monoclinic phase, and the semimetallic orthorhombic…

Two-dimensional (2D) transition metal dichalcogenides (TMDC) and their moir\'e interfaces have been demonstrated for correlated electron states, including Mott insulators and electron/hole crystals commensurate with moir\'e superlattices.…

Mesoscale and Nanoscale Physics · Physics 2024-01-08 Yusong Bai , Yiliu Li , Song Liu , Yinjie Guo , Jordan Pack , Jue Wang , Cory R. Dean , James Hone , X. -Y. Zhu

The advent of twisted moir\'e heterostructures as a playground for strongly correlated electron physics has led to a plethora of experimental and theoretical efforts seeking to unravel the nature of the emergent superconducting and…

Strongly Correlated Electrons · Physics 2022-05-06 Dominik Kiese , Yuchi He , Ciarán Hickey , Angel Rubio , Dante M. Kennes

Ising (Zeeman-type) spin-orbit coupling (SOC) generated by in-plane inverse asymmetry has attracted considerable attention, especially in Ising superconductors and spin-valley coupling physics. However, many unconventional observations and…

Materials Science · Physics 2023-09-14 Duo Zhao , Jiaqian Sun , Wei Tang , Yu-Jia Zeng

The newly discovered noncentrosymmetric superconductor ThCoC$_{2}$ exhibits numerous unconventional behavior in the field dependent heat capacity data. Here we present the first measurement of the gap symmetry of ThCoC$_{2}$ by muon spin…

Bilayer transition metal dichalcogenides (TMDs) belong to a class of materials with two unique features, the coupled spin-valley-layer degrees of freedom and the crystal structure that is globally centrosymmetric but locally…

Mesoscale and Nanoscale Physics · Physics 2017-03-01 Chao-Xing Liu

Two-dimensional layered transition metal dichalcogenide (TMDC) materials often exhibit exotic quantum matter phases due to the delicate coupling and competitions between the charge, lattice, orbital, and spin degrees of freedom.…

Mesoscale and Nanoscale Physics · Physics 2018-02-07 Seho Yi , Zhenyu Zhang , Jun-Hyung Cho

The formation of novel two-dimensional electron gas (2DEG) with high mobility in metal/amorphous interfaces has motivated an ongoing debate regarding the formation and novel characteristics of these 2DEGs. Here we report an optical study,…