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From the laboratory to real-world applications, synthesis of two dimensional (2D) materials requires modular techniques to control morphology, structure, chemistry, and the plethora of exciting properties arising from these nanoscale…

Materials Science · Physics 2024-01-31 Michael Altvater , Christopher Muratore , Michael Snure , Nicholas Glavin

Two-dimensional (2D) elemental semiconductors have great potential for device applications, but their performance is limited by the lack of efficient doping methods. Here, combining molecular beam epitaxy, scanning tunneling…

Materials Science · Physics 2023-07-07 Guangyao Miao , Nuoyu Su , Ze Yu , Bo Li , Xiaochun Huang , Weiliang Zhong , Qinlin Guo , Miao Liu , Weihua Wang , Jiandong Guo

In search of an improved strategy to form low resistance contacts to MoS2 and related semiconducting transition metal dichalcogenides, we use ab initio density functional electronic structure calculations in order to determine the…

Mesoscale and Nanoscale Physics · Physics 2019-05-03 Zhibin Gao , Zhixian Zhou , David Tomanek

Two-dimensional materials offer exceptional tunability of electronic and optical properties via strain and doping engineering. However, the unintentional introduction of polymeric residues during wet chemical 2D film transfer processes such…

Two-dimensional (2D) materials offer opportunities to explore both fundamental science and applications in the limit of atomic thickness. Beyond the prototypical case of graphene, other 2D materials have recently come to the fore. Of…

Materials Science · Physics 2021-01-11 Adam. J. Watson , Wenbo Lu , Marcos H. D. Guimarães , Meike Stöhr

The interest in obtaining high-quality monolayer transition metal dichalcogenides (TMDs) for optoelectronic device applications has been growing dramatically. However, the prevalence of defects and unwanted doping in these materials remains…

Chemical Physics · Physics 2023-01-18 Zhaojun Li , Hope Bretscher , Akshay Rao

Two-dimensional materials (2DM) have attracted much interest due to their distinct optical, electronic, and catalytic properties. These properties can be by tuned a range of methods including substitutional doping or, as recently…

We study the superconducting pairing instabilities and gap functions for prototypical two-dimensional (2D) transition-metal dichalcogenides (TMDCs) WS$_2$, MoTe$_2$, and MoS$_2$ in the 2H phase under both hole and electron doping at 10 K.…

Superconductivity · Physics 2022-09-07 Christopher Lane , Jian-Xin Zhu

Two-dimensional Transition-Metal Dichalcogenides (TMDs) are of great interest for second harmonic (SH) generation due to their large second-order susceptibility, atomically thin structure, and relaxed phase-matching conditions. TMDs are…

Increasing demands for renewable sources of energy has been a major driving force for developing efficient thermoelectric materials. Two-dimensional (2D) transition-metal dichalcogenides (TMDC) have emerged as promising candidates for…

Materials Science · Physics 2023-05-24 Sathwik Bharadwaj , Ashwin Ramasubramaniam , L. R. Ram-Mohan

Scalable and controlled doping of two-dimensional transition metal dichalcogenides is essential for tuning their electronic and optoelectronic properties. In this work, we demonstrate a robust approach for substitution of vanadium in…

Mesoscale and Nanoscale Physics · Physics 2026-04-09 Abhishek Bajgain , Santu Prasad Jana , Alexander Samokhvalov , Thomas Parker , John Derek Demaree , Ramesh C. Budhani

The following article presents a multi-length-scale characterization approach for investigating doping chemistry and spatial distributions within semiconductors, as demonstrated using a state-of-the-art CMOS image sensor. With an intricate…

The layered transition metal chalcogenides have been a fertile land in solid state physics for many decades. Various MX2-type transition metal dichalcogenides, such as WTe2, IrTe2, and MoS2, have triggered great attention recently, either…

Theoretically it has been known that breaking spin-degeneracy and effectively realizing 'spinless fermions' is a promising path to topological superconductors. Yet, topological superconductors are rare to date. Here, we propose to realize…

Superconductivity · Physics 2017-04-13 Yi-Ting Hsu , Abolhassan Vaezi , Mark H Fischer , Eun-Ah Kim

Low dimensional perovskites are considered good candidates for light emitting applications given the high exciton binding energy which should in principle improve the radiative recombination efficiency. Yet, single-layered two-dimensional…

The tunability of materials properties by light promises a wealth of future applications in energy conversion and information technology. Strongly correlated materials such as transition-metal dichalcogenides (TMDCs) offer optical control…

Materials Science · Physics 2023-07-10 Till Domröse , Thomas Danz , Sophie F. Schaible , Kai Rossnagel , Sergey V. Yalunin , Claus Ropers

We present low-temperature thermal conductivity measurements on the cuprate Tl_2Ba_2CuO_{6+delta} throughout the overdoped regime. In the T -> 0 limit, the thermal conductivity due to d-wave nodal quasiparticles provides a bulk measurement…

We demonstrate the integration of a thin BaTiO$_3$ (BTO) membrane with monolayer MoSe$_2$ in a dual gate device that enables in-situ manipulation of the BTO ferroelectric polarization with a voltage pulse. While two-dimensional (2D)…

The effect of doping on the parameters of an electron-hole liquid (EHL) in heterostructures based on transition metal dichalcogenides is studied. The phase diagram of the EHL is constructed. It is shown that for the formation of a…

Mesoscale and Nanoscale Physics · Physics 2022-05-11 P. V. Ratnikov , A. P. Silin

Doping is an effective way to tune the property of metal oxides1-5, for achieving functional oxide electronics6-8. Previously we developed a controllable hydrogen doping technology at ambient conditions by use of electron-proton synergistic…

Applied Physics · Physics 2021-03-30 Yuliang Chen , Changlong Hu , Liyan Xie , Xiaoyu Zhou , Bowen Li , Hui Ren , Liang Li , Guobin Zhang , Jun Jiang , Chongwen Zou