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Two dimensional (2D) van der Waals heterostructures from transition metal dichalcogenide (TMDC) semiconductors show a new class of spatially separate excitons with extraordinary properties. The interlayer excitons (XI) have been studied…

Materials Science · Physics 2021-03-02 Jaehoon Ji , Jong Hyun Choi

van der Waals heterostructures consisting of transition metal dichalcogenides (TMDs) and two-dimensional (2D) magnets offer a versatile platform to study the coexistence and transformation of different excitons. By focusing on TMD WSe$_2$…

Materials Science · Physics 2025-09-29 Mushir Thodika , Dimitar Pashov , Igor Zutic , Mark van Schilfgaarde , Swagata Acharya

Moir\'e superlattices can induce correlated-electronic phases in twisted van-der-Waals materials. Strongly correlated quantum phenomena emerge, such as superconductivity and the Mott-insulating state. However, moir\'e superlattices produced…

Van der Waals heterostructures composed of transition metal dichalcogenide monolayers (TMDs) are characterized by their truly rich excitonic properties which are determined by their structural, geometric and electronic properties: In…

Heterostructures of layered transition metal dichalcogenides (TMDs) host long-lived, tunable excitons, making them intriguing candidates for material-based quantum information applications. Light absorption in these systems induces a…

Materials Science · Physics 2023-08-25 Tomer Amit , Sivan Refaely-Abramson

Trapped interlayer excitons (IXs) in MoSe2-WSe2 heterobilayers have generated interest for use as single quantum emitter arrays and as an opportunity to study moir\'e physics in transition metal dichalcogenide (TMD) heterostructures. IXs…

The creation of moir\'e patterns in crystalline solids is a powerful approach to manipulate their electronic properties, which are fundamentally influenced by periodic potential landscapes. In 2D materials, a moir\'e pattern with a…

Mesoscale and Nanoscale Physics · Physics 2019-06-19 Kyle L. Seyler , Pasqual Rivera , Hongyi Yu , Nathan P. Wilson , Essance L. Ray , David Mandrus , Jiaqiang Yan , Wang Yao , Xiaodong Xu

Recent advances in the field of vertically stacked 2D materials have revealed a rich exciton landscape. In particular, it has been demonstrated that out-of-plane electrical fields can be used to tune the spectral position of spatially…

Mesoscale and Nanoscale Physics · Physics 2023-01-18 Joakim Hagel , Samuel Brem , Ermin Malic

We investigate the optical properties of interlayer excitons in heterobilayer transition metal dichalcogenides where moir\'e pattern is introduced by heterostrain, in comparison with that introduced by twisting (and/or lattice mismatch).…

Mesoscale and Nanoscale Physics · Physics 2021-10-20 Huiyuan Zheng , Dawei Zhai , Wang Yao

Interlayer excitons in transition-metal dichalcogenide heterobilayers combine high binding energy and valley-contrasting physics with long optical lifetime and strong dipolar character. Their permanent electric dipole enables electric-field…

Strongly enhanced electron-electron interaction in semiconducting moir\'e superlattices formed by transition metal dichalcogenides (TMDCs) heterobilayers has led to a plethora of intriguing fermionic correlated states. Meanwhile, interlayer…

Excitons dominate the optics of atomically-thin transition metal dichalcogenides and 2D van der Waals heterostructures. Interlayer 2D excitons, with an electron and a hole residing in different layers, form rapidly in heterostructures…

Mesoscale and Nanoscale Physics · Physics 2021-04-20 M. G. Burdanova , M. Liu , M. Staniforth , Y. Zheng , R. Xiang , S. Chiashi , A. Anisimov , E. I. Kauppinen , S. Maruyama , J. Lloyd-Hughes

Moir\'e structures in van der Waals heterostructures lead to emergent phenomena including superconductivity in twisted bilayer graphene and optically accessible strongly-correlated electron states in transition metal dichalcogenide…

Mesoscale and Nanoscale Physics · Physics 2020-09-17 Liam P. McDonnell , Jacob J. S. Viner , Pasqual Rivera , Antonio Cammarata , Huseyin S. Sen , Xiaodong Xu , David C. Smith

Charge separated interlayer excitons in transition metal dichalcogenide (TMDC) heterobilayers are being explored for moir\'e exciton lattices and exciton condensates. The presence of permanent dipole moments and the poorly screened Coulomb…

Mesoscale and Nanoscale Physics · Physics 2021-03-17 Jue Wang , Qianhui Shi , En-Min Shih , Lin Zhou , Wenjing Wu , Yusong Bai , Daniel A. Rhodes , Katayun Barmak , James Hone , Cory R. Dean , X. -Y. Zhu

Interlayer excitons in van der Waals heterostructures offer rich collective phases, prospective optoelectronic applications, and versatile tunability, where control by electronic means is particularly relevant and practical. Here, in the…

Mesoscale and Nanoscale Physics · Physics 2025-02-20 Cem Sevik , Engin Torun , Milorad V. Milosevic , Fulvio Paleari

Throughout the years, strongly correlated coherent states of excitons have been the subject of intense theoretical and experimental studies. This topic has recently boomed due to new emerging quantum materials such as van der Waals (vdW)…

Mesoscale and Nanoscale Physics · Physics 2021-12-30 Igor V. Bondarev , Oleg L. Berman , Roman Ya. Kezerashvili , Yurii E. Lozovik

Excitons in monolayer transition-metal-dichalcogenides (TMDs) dominate their optical response and exhibit strong light-matter interactions with lifetime-limited emission. While various approaches have been applied to enhance light-exciton…

Artificial moir\'e superlattices in 2d van der Waals heterostructure is a new venue for realizing and controlling correlated electronic phenomena. Recently, twisted bilayer WSe$_2$ emerged as a new robust moir\'e system hosting a correlated…

Strongly Correlated Electrons · Physics 2020-12-02 Zhen Bi , Liang Fu

In superlattices of twisted semiconductor monolayers, tunable moir\'e potentials emerge, trapping excitons into periodic arrays. In particular, spatially separated interlayer excitons are subject to a deep potential landscape and they…

Mesoscale and Nanoscale Physics · Physics 2023-06-02 Samuel Brem , Ermin Malic

Spatially periodic structures with a long range period, referred to as moir\'e pattern, can be obtained in van der Waals bilayers in the presence of a small stacking angle or of lattice mismatch between the monolayers. Theoretical…