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We report a study of electronic transport in van der Waals heterostructures composed of flakes of the antiferromagnetic Mott insulator a-RuCl_3 placed on top of monolayer graphene Hall bars. While the zero-field transport shows a strong…

Strongly Correlated Electrons · Physics 2019-12-11 Boyi Zhou , J. Balgley , P. Lampen-Kelley , J. -Q. Yan , D. G. Mandrus , E. A. Henriksen

We observe optical third harmonic generation from graphene and few-layer graphite flakes produced by exfoliation. The emission scales with the cube of the intensity of the incident near-infrared femtosecond pulses and has a wavelength that…

Mesoscale and Nanoscale Physics · Physics 2013-03-20 Nardeep Kumar , Jatinder Kumar , Chris Gerstenkorn , Rui Wang , Hsin-Ying Chiu , Arthur L. Smirl , Hui Zhao

With the technology of artificial defects creating, we can tune the band structure and transport properties of many two-dimensional (2D) layered materials. One prototype materials system is the antidoted graphene sheet, where periodical…

Materials Science · Physics 2022-01-19 Shuang Tang , Andy Juan , David Drysdale , Joseph Duarte Menjivar , Jason Guzman

The authors report on synthesis and thermal properties of the electrically-conductive thermal interface materials with the hybrid graphene-metal particle fillers. The thermal conductivity of resulting composites was increased by ~500% in a…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 Vivek Goyal , Alexander A. Balandin

Hydrogen adsorption by graphite is examined by classical molecular dynamics simulation using a modified Brenner REBO potential. Such interactions are typical in chemical sputtering experiments, and knowledge of the fundamental behavior of…

Soft Condensed Matter · Physics 2009-11-11 A. Ito , H. Nakamura

The extreme versatility of two-dimensional van der Waals (vdW) materials derives from their ability to exhibit new electronic properties when assembled in proximity with dissimilar crystals. For example, although graphene is inherently…

The electronic transport properties of graphene-based superlattice structures are investigated. A graphene-based modulation-doped superlattice structure geometry is proposed and consist of periodically arranged alternate layers:…

Mesoscale and Nanoscale Physics · Physics 2013-11-25 Dima Bolmatov , Chung-Yu Mou

Propylene carbonate (PC) wets graphite with a contact angle of 31 deg at ambient conditions. Molecular dynamics simulations agree with this contact angle after 40% reduction of the strength of graphite-C atom Lennard-Jones interactions with…

Fullerene solids doped with alkali metals (A$_3$C$_{60}$, A = K, Rb, Cs) exhibit a superconducting transition temperature ($T_c$) as high as 40 K, and their unconventional superconducting properties have been a subject of debate. With…

Superconductivity · Physics 2023-10-24 Jianyu Li , Zhangkai Cao , Jiahao Su , Ruipeng Wang , Haipeng Li , Yusuke Nomura , Xiaosen Yang , Ho-Kin Tang

Graphene has attracted great attentions since its first discovery in 2004. Various approaches have been proposed to control its physical and electronic properties. Here, we report that graphene based intercalation compounds is an efficient…

Materials Science · Physics 2010-11-04 Da Zhan , Li Sun , Zhenhua Ni , Lei Liu , Xiaofeng Fan , Yingying Wang , Ting Yu , Yeng Ming Lam , Wei Huang , Zexiang Shen

Prompted by recent reports on $\sqrt{3} \times \sqrt{3}$ graphene superlattices with intrinsic inter-valley interactions, we perform first-principles calculations to investigate the electronic properties of periodically nitrogen-doped…

Mesoscale and Nanoscale Physics · Physics 2021-02-05 Fuming Xu , Zhizhou Yu , Zhirui Gong , Hao Jin

A single graphene layer placed between two parallel Ni(111) surfaces screens the strong attractive force and results in a significant reduction of adhesion and sliding friction. When two graphene layers are inserted, each graphene is…

Mesoscale and Nanoscale Physics · Physics 2013-05-24 S. Cahangirov , S. Ciraci , V. Ongun Özçelik

We propose a mechanism to control the interaction between adsorbates on graphene. The interaction between a pair of adsorbates---the change in adsorption energy of one adsorbate in the presence of another---is dominated by the interaction…

Mesoscale and Nanoscale Physics · Physics 2013-09-13 Dmitry Solenov , Chad Junkermeier , Thomas L. Reinecke , Kirill A. Velizhanin

Graphene is a promising material for nonlinear THz applications owing to its high third-order susceptibility and tunable optical properties. Its strong nonlinear response, driven by free-carrier thermodynamics, facilitates efficient…

Electronic decoupling of graphene from metallic and semiconducting substrates via intercalation of different species is one of the widely used approaches in studies of graphene. In the present work the modification of the electronic and…

Materials Science · Physics 2021-12-24 Yong Zhou , Roman Ovcharenko , Beate Paulus , Yuriy Dedkov , Elena Voloshina

Graphene wetting by polymers is a critical issue to both the success of polymer-aided transfer of large size sheets onto specific substrates and to the development of well performing nanocomposites. Here we show for the first time that high…

Pristine graphene interacts relatively weakly with Al, which is a specie of importance for novel generations of metal-ion batteries. We employ DFT calculations to explore the possibility of enhancing Al interaction with graphene. We…

Materials Science · Physics 2021-06-23 Jovana Vlahović , Ana S. Dobrota , Natalia V. Skorodumova , Igor A. Pašti

Here we present an overview of recent fundamental studies on the nature of the interaction between individual metal atoms and metal clusters and the conjugated surfaces of graphene and carbon nanotube with a particular focus on the…

Materials Science · Physics 2014-09-19 Santanu Sarkar , Robert Cort Haddon

The conduction electrons in graphene promise new opportunities to access the region of strong many-body electron-electron correlations. Extremely high quality, atomically flat two-dimensional electron sheets and quasi-one-dimensional…

Mesoscale and Nanoscale Physics · Physics 2016-05-06 David Neilson , Andrea Perali , Mohammad Zarenia

Graphene is one of the most researched two dimensional (2D) material due to its unique combination of mechanical, thermal and electrical properties. Special 2D structure of graphene enables it to exhibit a wide range of peculiar material…

Computational Physics · Physics 2023-06-13 Akash Singh , Yumeng Li