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Graphene is a single layer of carbon atoms arranged in a honeycomb lattice with remarkable mechanical, electrical and optical properties. For the first time graphene layers suspended on copper meshes were installed into a gas detector…

Allotropes of carbon, including one-dimensional carbon nanotubes and two-dimensional graphene sheets, continue to draw attention as promising platforms for probing the physics of electrons in lower dimensions. Recent research has shown that…

介观与纳米尺度物理 · 物理学 2020-05-20 Benedetta Flebus , Allan H. MacDonald

We consider the orbital magnetic properties of non-interacting charge carriers in graphene-based nanostructures in the low-energy regime. The magnetic response of such systems results both, frombulk contributions and from confinement…

介观与纳米尺度物理 · 物理学 2014-11-26 Lisa Heße , Klaus Richter

Graphene, a one-atom thick zero gap semiconductor [1, 2], has been attracting an increasing interest due to its remarkable physical properties ranging from an electron spectrum resembling relativistic dynamics [3-12] to ballistic transport…

介观与纳米尺度物理 · 物理学 2011-11-09 T. O. Wehling , K. S. Novoselov , S. V. Morozov , E. E. Vdovin , M. I. Katsnelson , A. K. Geim , A. I. Lichtenstein

Density functional theory (DFT) modeling of the physisorption of four different types of molecules (toluene, bromine dimmer, water and nitrogen dioxide) over and above graphene ripples has been performed. For all types of molecules changes…

介观与纳米尺度物理 · 物理学 2015-05-20 D. W. Boukhvalov

The correlation of odd electrons in graphene turns out to be significant so that the species should be attributed to correlated ones. This finding profoundly influences the computational strategy addressing it to multireference…

材料科学 · 物理学 2012-01-27 E. F. Sheka

The present manuscript summarizes the modern view on the problem of the graphene-metal interaction. Presently, the close-packed surfaces of d metals are used as templates for the preparation of highly-ordered graphene layers. Different…

材料科学 · 物理学 2017-08-23 E. N. Voloshina , Yu. S. Dedkov

Using first-principles calculations we demonstrate sizable exchange coupling between a magnetic molecule and a magnetic substrate via a graphene layer. As a model system we consider cobaltocene (CoCp$_2$) adsorbed on graphene deposited on…

介观与纳米尺度物理 · 物理学 2015-06-15 Simone Marocchi , Paolo Ferriani , Nuala Mai Caffrey , Franca Manghi , Stefan Heinze , Valerio Bellini

A key to building functional devices on the basis of single molecule magnets in the framework of molecular electronics is the ability to deposit and study these molecules on a surface, because the structural, electronic and magnetic…

介观与纳米尺度物理 · 物理学 2016-01-26 Judith Donner , Jan-Philipp Broschinski , Bastian Feldscher , Anja Stammler , Hartmut Bögge , Thorsten Glaser , Daniel Wegner

We study the behavior of charge carriers in graphene in inhomogeneous perpendicular magnetic fields. We consider two types of one-dimensional magnetic profiles, uniform in one direction: a sequence of N magnetic barriers, and a sequence of…

介观与纳米尺度物理 · 物理学 2009-01-27 L. Dell'Anna , A. De Martino

Rare-earth (RE) atoms on top of 2D materials represent an interesting platform with the prospect of tailoring the magnetic anisotropy for practical applications. Here, we investigate the ground state and magnetic properties of selected…

介观与纳米尺度物理 · 物理学 2024-07-25 Johanna P. Carbone , Juba Bouaziz , Gustav Bihlmayer , Stefan Blügel

The high carrier mobility in graphene promises its utility in electronics applications. Azobenzene is a widely studied organic molecule for switchable optoelectronic devices that can be synthesized with a wide variety of ligands and…

材料科学 · 物理学 2015-06-18 Jonathan Trinastic , Hai-Ping Cheng

Electronic excitations in a graphitic monolayer (graphene) in the long-wavelength approximation are characterized by the linear dispersion law, representing a unique example of the really two-dimensional "ultrarelativistic" fermionic system…

强关联电子 · 物理学 2016-10-04 Yu. A. Sitenko , N. D. Vlasii

Two-dimensional graphene exhibits many fascinating properties such as ballistic electronic conduction and quantum Hall effect at room temperature.1-4 Graphene doped electrochemically or through charge-transfer with electron-donor and…

Bond stretching and angle bending force fields, appropriate to describe in-plane motion of graphene sheets, are derived using first principles' methods. The obtained force fields are fitted by analytical anharmonic energy potential…

材料科学 · 物理学 2015-06-12 G. Kalosakas , N. N. Lathiotakis , C. Galiotis , K. Papagelis

Magnetic confinement in graphene has been of recent and growing interest because its potential applications in nanotechnology. In particular, the observation of the so called magnetic edge states in graphene has opened the possibility to…

介观与纳米尺度物理 · 物理学 2010-08-31 Gabriela Murguia

In this paper, we study the near-field radiative energy, linear-momentum, and angular-momentum transfer from a current-biased graphene to nanoparticles. The electric current through the graphene sheet induces nonequilibrium fluctuations,…

光学 · 物理学 2024-02-19 Huimin Zhu , Gaomin Tang , Lei Zhang , Jun Chen

We show theoretically that in the external magnetic field like charges on top of graphene monolayer may be mutually attracted to form macro-molecules. For this to happen graphene needs to be in Quantum Hall plateau state with local chemical…

介观与纳米尺度物理 · 物理学 2015-11-26 Sergey Slizovskiy

Edge effects play an important role for many properties of graphene. While most works have focused on the effects from isolated free edges, we present a novel knotting phenomenon induced by the interactions between a pair of free edges in…

介观与纳米尺度物理 · 物理学 2016-11-22 Hao-Yu Zhang , Jin-Wu Jiang , Tienchong Chang , Xingming Guo , Harold S. Park

We present an ab-initio analysis of the impact of edge shape and graphene-molecule anchor coupling on the electronic and transport functionalities of graphene-based molecular electronics devices. We analyze how Fano-like resonances, spin…

介观与纳米尺度物理 · 物理学 2015-06-04 D. Carrascal , V. M. García-Suárez , J. Ferrer