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Two-dimensional (2-D) transition metal dichalcogenides (TMDs) have shown numerous interesting physical and chemical properties, making them promising materials for electronic, optoelectronic, and energy applications. Tuning thermal…

Materials Science · Physics 2016-09-07 Xiaokun Gu , Ronggui Yang

Monolayers of graphene and hexagonal boron nitride (hBN) are highly permeable to thermal protons. For thicker two-dimensional (2D) materials, proton conductivity diminishes exponentially so that, for example, monolayer MoS2 that is just…

Mesoscale and Nanoscale Physics · Physics 2019-09-04 L. Mogg , G. -P. Hao , S. Zhang , C. Bacaksiz , Y. Zou , S. J. Haigh , F. M. Peeters , A. K. Geim , M. Lozada-Hidalgo

The extraordinary mechanical properties of 2D TMDCs make them ideal candidates for investigating strain-induced control of various physical properties. Here we explore the role of non-uniform strain in modulating optical, electronic and…

The availability of large-area substrates imposes an important constraint on the technological and commercial realization of devices made of layered materials. Aluminum nitride films on silicon are shown to be promising candidate materials…

Atomically thin MoS$_{2}$ crystals have been recognized as a quasi-2D semiconductor with remarkable physics properties. This letter reports our Raman scattering measurements on multilayer and monolayer MoS$_{2}$, especially in the…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Hualing Zeng , Bairen Zhu , Kai Liu , Jiahe Fan , Xiaodong Cui , Q. M. Zhang

We fabricated superconducting MgB2 thin films on (001) MgO substrates. The samples were prepared by magnetron rf and dc co-sputtering on heated substrates. They were annealed ex-situ for one hour at temperatures between 450{\deg}C and…

Superconductivity · Physics 2010-10-27 Savio Fabretti , Patrick Thomas , Markus Meinert , Andy Thomas

Synthesis of large-scale, uniform, easily transferable, and highly crystalline monolayer (1L) molybdenum disulfide (MoS2) on different substrates is a challenge and could decide its suitability for opto-electronic device applications.…

Materials Science · Physics 2020-12-29 Aditya Singh , Monika Moun , Madan Sharma , Arabinda Barman , Ashok Kumar Kapoor , Rajendra Singh

The recent discovery of altermagnetism has sparked renewed interest in the growth of epitaxial films of the NiAs-phase polymorph of CrSb. This paper describes the magnetron sputtering-based fabrication and characterization of high-quality…

The optical and electronic properties of 2D semiconductors are intrinsically linked via the strong interactions between optically excited bound species and free carriers. Here we use near-field scanning microwave microscopy (SMM) to image…

2D-layered tin (II) oxide (SnO) has recently emerged as a promising bipolar channel material for thin-film transistors and complementary metal-oxide-semiconductor devices. In this work, we present a first-principles investigation of the…

Materials Science · Physics 2022-02-02 Devesh R. Kripalani , Ping-Ping Sun , Pamela Lin , Ming Xue , Kun Zhou

Atomically thin materials such as graphene and semiconducting transition metal dichalcogenides (TMDCs) have attracted extensive interest in recent years, motivating investigation into multiple properties. In this work, we demonstrate a…

Materials Science · Physics 2015-09-24 Xian Zhang , Dezheng Sun , Yilei Li , Gwan-Hyoung Lee , Xu Cui , Daniel Chenet , Yumeng You , Tony Heinz , James Hone

Atomically thin transition metal dichalcogenides are highly promising for integrated optoelectronic and photonic systems due to their exciton-driven linear and nonlinear interaction with light. Integrating them into optical fibers yields…

Two-dimensional (2D) transition metal dichalcogenides (TMDs), such as molybdenum disulfide (MoS$_2$), are emerging as promising materials for next-generation electronic devices. They have proved to be serious candidates for integration with…

Although many prototype devices based on two-dimensional (2D) MoS2 have been fabricated and wafer scale growth of 2D MoS2 has been realized, the fundamental nature of 2D MoS2-metal contacts has not been well understood yet. We provide a…

Mesoscale and Nanoscale Physics · Physics 2015-07-03 Hongxia Zhong , Zeyuan Ni , Yangyang Wang , Meng Ye , Zhigang Song , Yuanyuan Pan , Ruge Quhe , Jinbo Yang , Li Yang , Junjie Shi , Jing Lu

By exhibiting a measurable bandgap and exotic valley physics, atomically-thick tungsten disulfide (WS2) offers exciting prospects for optoelectronic applications. The synthesis of continuous WS2 films on other two-dimensional (2D) materials…

Several layered transition metal borides can now be realized by a simple and general fabrication method [Fokwa et al.,Adv. Mater. 2018, 30, 1704181],inspiring our interest to transition metal borides monolayer. Here, we predict a new…

Materials Science · Physics 2019-11-05 Yipeng An , Shijing Gong , Yusheng Hou , Jie Li , Ruqian Wu , Zhaoyong Jiao , Tianxing Wang , Jutao Jiao

Large capacitance enhancement is useful for increasing the gate capacitance of field-effect transistors (FETs) to produce low-energy-consuming devices with improved gate controllability. We report strong capacitance enhancement effects in a…

We have investigated properties of superconducting titanium nitride (TiN) films that were sputtered over a large range of RF-induced DC bias voltage applied to the substrate. Films grown with the largest bias voltages contained cubic TiN…

The manipulation of the magnetization by spin-orbit torques (SOTs) has recently been extensively studied due to its potential for efficiently writing information in magnetic memories. Particular attention is paid to non-centrosymmetric…

We present an analytical investigation of the optical absorption spectrum of monolayer molybdenumdisulfide. Based on the density matrix formalism, our approach gives insights into the microscopic origin of excitonic transitions, their…

Materials Science · Physics 2014-03-24 Gunnar Berghäuser , Ermin Malic