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Low-dimensional multiferroicity, though highly scarce in nature, has attracted great attention due to both fundamental and technological interests. Using first-principles density functional theory, we show that ferromagnetism and…

Materials Science · Physics 2018-07-26 Jingshan Qi , Hua Wang , Xiaofang Chen , Xiaofeng Qian

Charge density wave, or CDW, is usually associated with Fermi surfaces nesting. We here report a new CDW mechanism discovered in a 2H-structured transition metal dichalcogenide, where the two essential ingredients of CDW are realized in…

Strongly Correlated Electrons · Physics 2011-11-09 D. W. Shen , B. P. Xie , J. F. Zhao , L. X. Yang , L. Fang , J. Shi , R. H. He , D. H. Lu , H. H. Wen , D. L. Feng

Transition metal dichalcogenides (TMDs) and other van der Waals (vdW) semiconductors enable transfer-printed, lattice-mismatch-free stacking of many photovoltaic junctions, motivating a re-examination of multijunction detailed-balance…

Optics · Physics 2026-05-04 Seungwoo Lee

Van der Waals (vdW) materials offer new ways to assemble artificial electronic media with properties controlled at the design stage, by combining atomically defined layers into interfaces and heterostructures. Their potential for…

We consider the id-density wave (DDW) order, representing the pseudo-gap (PG) state, and the d-wave superconductivity (DSC)within the BCS framework for the two-dimensional (2D) fermion system on a square lattice starting with a mean-field…

Superconductivity · Physics 2013-06-28 Partha Goswami

Due to their physical properties and potential applications in energy conversion and storage, transition metal dichalcogenides (TMDs) have garnered substantial interest in recent years. Amongst this class of materials, TMDs based on…

Recent advancements have established self-intercalation as a powerful technique for manipulating quantum material properties, with precisely controllable intercalation concentrations. Given the inherently rich phase diagrams of transition…

Materials Science · Physics 2025-05-30 Yuhui Yan , Lingxiao Xiong , Feipeng Zheng

Semiconducting Transition Metal Dichalcogenides (TMDs) have significant nonlinear optical effects. In this work we have used second-harmonic generation (SHG) and the four-wave mixing (FWM) spectroscopy in resonance with the excitons in…

We systematically investigated the superconducting properties and the interplay between charge-density-waves (CDW) and superconductivity in lithium-intercalated 2H-TaS2. By gradually increasing the lithium content x, the CDW formation…

Superconductivity · Physics 2021-09-08 Huanlong Liu , Shangxiong Huangfu , Xiaofu Zhang , Hai Lin , Andreas Schilling

The optical properties of transition metal dichalcogenide monolayers are widely dominated by excitons, Coulomb-bound electron-hole pairs. These quasi-particles exhibit giant oscillator strength and give rise to narrow-band, well-pronounced…

Mesoscale and Nanoscale Physics · Physics 2018-07-13 Christian Schneider , Mikhail M. Glazov , Tobias Korn , Sven Höfling , Bernhard Urbaszek

We study the coupling of light and the structural order parameter in the charge density wave (CDW) state of the layered transition-metal dichalcogenide, Tantalum Disulfide ($1T-\mathrm{TaS_2}$). Using time-dependent density functional…

Materials Science · Physics 2021-06-01 Anubhab Haldar , Cristian L. Cortes , Stephen K. Gray , Sahar Sharifzadeh , Pierre Darancet

Symmetry-breaking electronic phase in unconventional high-temperature (high-Tc) superconductors is a fascinating issue in condensed-matter physics, among which the most attractive phases are charge density wave (CDW) phase with four…

Superconductivity · Physics 2023-05-30 Tianheng Wei , Yanzhao Liu , Wei Ren , Ziqiang Wang , Jian Wang

Layered materials that stack different lattice symmetries are rare in nature. Misfit layered chalcogenides, which combine square and hexagonal lattices of rocksalt monochalcogenides and transition-metal dichalcogenides, provide a platform…

The transition metal dichalcogenide 6R-TaS$_{2}$ offers a natural platform for studying the interplay among charge density wave (CDW) order, superconductivity, and transport anomalies. Recent findings reveal that, in the intermediate…

The existence of a charge density wave (CDW) in transition metal dichalcogenide CuS$_2$ has remained undetermined since its first experimental synthesis nearly 50 years ago. Despite conflicting experimental literature regarding its low…

Mesoscale and Nanoscale Physics · Physics 2020-10-07 Yuxin Yin , Jennifer Coulter , Christopher J. Ciccarino , Prineha Narang

Pressure not only provides a powerful way to tune the crystal structure of transition metal dichalcogenides (TMDCs) but also promotes the discovery of exotic electronic states and intriguing phenomena. Structural transitions from the…

Superconductivity · Physics 2026-01-13 Feng Xiao , Wen Lei , Wei Wang , Carmine Autieri , Xiaojun Zheng , Xing Ming , Jianlin Luo

Transition-metal dichalcogenides (TMDs) are layered compounds that support many electronic phases, including various charge density waves, superconducting, and Mott insulating states. Their intercalation with magnetic ions introduces…

Van der Waals layered materials, such as transition metal dichalcogenides (TMDs), are an exciting class of materials with weak interlayer bonding which enables one to create van der Waals heterostructures (vdWH). Recent work has shown that…

Transition metal dichalcogenides (TMDs) offer a unique platform to study unconventional superconductivity, owing to the presence of strong spin-orbit coupling and a remarkable stability to an in-plane magnetic field. A recent study found…

Superconductivity · Physics 2022-06-29 Ranjani Seshadri , Maxim Khodas , Dganit Meidan

At the few-atom-thick limit, transition metal dichalcogenides (TMDs) exhibit a host of attractive electronic optical, and structural properties. The possibility to pattern these properties has a great impact on applied and fundamental…