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Compelling evidence suggests distinct correlated electron behavior may exist only in clean 2D materials such as 1T-TaS2. Unfortunately, experiment and theory suggest that extrinsic disorder in free standing 2D layers disrupts…

We report a sequential two-step vapor deposition process for growing mixed-dimensional van der Waals (vdW) materials, specifically Te nanowires (1D) and MoS$_2$ (2D), on a single SiO$_2$ wafer. Our growth technique offers a unique potential…

Highly customizable interfaces created by van der Waals stacked 2D materials provide an extremely flexible opportunity for engineering and effectively controlling material properties. The atomic-thin nature and strong scalability of…

Materials Science · Physics 2024-02-14 Xueqian Sun , Ermin Malic , Yuerui Lu

The integration of two-dimensional (2D) materials with photonic structures has catalyzed a wide spectrum of optical and optoelectronic applications. Conventional nanophotonic structures generally lack efficient reconfigurability and…

In van der Waals heterostructures, electronic bands of two-dimensional (2D) materials, their nontrivial topology, and electron-electron interactions can be dramatically changed by a moire pattern induced by twist angles between different…

Combining various two-dimensional materials into novel van der Waals (vdW) heterostructures has been shown to lead to new emergent quantum systems. A novel heterostructure composed of a vdW topological insulator (TI) such as…

Materials Science · Physics 2020-12-01 Joon Young Park , Janghyun Jo , Jennifer A. Sears , Young-June Kim , Miyoung Kim , Philip Kim , Gyu-Chul Yi

Vertical stacking of two-dimensional (2D) crystals, such as graphene and hexagonal boron nitride, has recently lead to a new class of materials known as van der Waals heterostructures (vdWHs) with unique and highly tunable electronic…

Mesoscale and Nanoscale Physics · Physics 2023-07-19 Kirsten Andersen , Simone Latini , Kristian S. Thygesen

Unlike bilayers or a few layers thick materials, heterostructures are designer materials formed by assembling different monolayers in any desired sequence. As a result, while multilayer materials come with their intrinsic properties,…

Materials Science · Physics 2023-10-20 Achintya Priydarshi , Abhinav Arora , Yogesh Singh Chauhan , Amit Agarwal , Somnath Bhowmick

Van der Waals (vdW) heterostructures combining layered ferromagnets and other two-dimensional (2D) crystals are promising building blocks for the realization of ultra-compact devices with integrated magnetic, electronic and optical…

Heterostructure materials form the basis of much of modern electronics, from transistors to lasers and light-emitting diodes. Recent years have seen a renewed focus on creating heterostructures through the vertical integration of…

Two-dimensional (2D) van der Waals (vdW) materials show a range of profound physical properties that can be tailored through their incorporation in heterostructures and manipulated with external forces. The recent discovery of long-range…

Vertically stacking two dimensional (2D) materials can enable the design of novel electronic and optoelectronic devices and realize complex functionality. However, the fabrication of such artificial heterostructures in wafer scale with an…

Mesoscale and Nanoscale Physics · Physics 2016-01-12 Xiang Yuan , Lei Tang , Shanshan Liu , Peng Wang , Zhigang Chen , Cheng Zhang , Yanwen Liu , Weiyi Wang , Yichao Zou , Cong Liu , Nan Guo , Jin Zou , Peng Zhou , Weida Hu , Faxian Xiu

van der Waals (vdW) heterojunctions formed by two-dimensional (2D) materials have attracted tremendous attention due to their excellent electrical/optical properties and device applications. However, current 2D heterojunctions are largely…

Mesoscale and Nanoscale Physics · Physics 2015-11-10 Daowei He , Yiming Pan , Haiyan Nan , Shuai Gu , Ziyi Yang , Bing Wu , Xiaoguang Luo , Bingchen Xu , Yuhan Zhang , Yun Li , Zhenhua Ni , Baigeng Wang , Jia Zhu , Yang Chai , Yi Shi , Xinran Wang

In addition to a plethora of emergent phenomena, the spatial topology of optical vortices enables an array of applications spanning communications to quantum photonics. Nonlinear optics is essential in this context, providing access to an…

Assembling different two-dimensional (2D) crystals, covering a very broad range of properties, into van der Waals (vdW) heterostructures enables the unprecedented possibilities for combining the best of different ingredients in one…

Materials Science · Physics 2017-05-17 Jia-Bin Qiao , Yue Gong , Wei-Jie Zuo , Yi-Cong Wei , Dong-Lin Ma , Hong Yang , Ning Yang , Kai-Yao Qiao , Jin-An Shi , Lin Gu , Lin He

Multilayers based on quantum materials (complex oxides, topological insulators, transition-metal dichalcogenides, etc) have enabled the design of devices that could revolutionize microelectronics and optoelectronics. However,…

In this article we review recent work on van der Waals (vdW) systems in which at least one of the components has strong spin-orbit coupling. We focus on a selection of vdW heterostructures to exemplify the type of interesting electronic…

Mesoscale and Nanoscale Physics · Physics 2020-06-04 Enrico Rossi , Christopher Triola

Three-dimensional epitaxial heterostructures are based on covalently-bonded interfaces, whereas those from 2-dimensional (2D) materials exhibit van der Waals interactions. Under the right conditions, however, material structures with mixed…

Two-dimensional (2D) van der Waals ferroelectrics are recognized for enabling many applications, from memory and logic to neuromorphic computing, as well as transforming other materials to control electronic phase transitions and…

Transition metal dichalcogenides (TMDs) are materials that can exhibit intriguing optical properties like a change of the bandgap from indirect to direct when being thinned down to a monolayer. Well-resolved narrow excitonic resonances can…