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We present a theory of electronic transport in graphene in the presence of randomly placed adsorbates. Our analysis predicts a marked asymmetry of the conductivity about the Dirac point, as well as a negative weak-localization…

介观与纳米尺度物理 · 物理学 2008-11-05 John P. Robinson , Henning Schomerus , Laszlo Oroszlany , Vladimir I. Fal'ko

Motivated by a recent experiment reporting on the possible application of graphene as sensors, we calculate transport properties of 2D graphene monolayers in the presence of adsorbed molecules. We find that the adsorbed molecules, acting as…

介观与纳米尺度物理 · 物理学 2007-11-16 E. H. Hwang , S. Adam , S. Das Sarma

We study the scattering of graphene quasiparticles by topological defects, represented by holes, pentagons and heptagons. For the case of holes, we obtain the phase shift and found that at low concentration they appear to be irrelevant for…

强关联电子 · 物理学 2010-10-19 Jakson M. Fonseca , Winder A. Moura-Melo , Afranio R. Pereira

The nonlinear optical and optoelectronic properties of graphene with the emphasis on the processes of harmonic generation, frequency mixing, photon drag and photogalvanic effects as well as generation of photocurrents due to coherent…

介观与纳米尺度物理 · 物理学 2014-02-04 M. M. Glazov , S. D. Ganichev

The evolution of electronic wave packets (WPs) through grain boundaries (GBs) of various structures in graphene was investigated by the numerical solution of the time-dependent Schroedinger equation. WPs were injected from a simulated STM…

介观与纳米尺度物理 · 物理学 2013-08-12 Péter Vancsó , Géza I. Márk , Philippe Lambin , Alexandre Mayer , Yong-Sung Kim , Chanyong Hwang , László P. Biró

A discovery of the unusual thermal properties of graphene stimulated experimental, theoretical and computational research directed at understanding phonon transport and thermal conduction in two-dimensional material systems. We provide a…

材料科学 · 物理学 2017-02-16 Denis L. Nika , Alexander A. Balandin

Online Supplementary Information for arXiv:1008.0783

介观与纳米尺度物理 · 物理学 2010-08-19 K. Zou , J. Zhu

Electron transport in a graphene quantum well can be analogous to photon transmission in an optical fiber. In this work, we present a detailed theoretical analysis to study the transport characteristics of graphene waveguides under the…

介观与纳米尺度物理 · 物理学 2019-09-18 Nayyar Abbas Shah , Vahid Mosallanejad , Kuei-Lin Chiu , Guo-ping Guo

We provide a thorough study of a carbon divacancy, a fundamental but almost unexplored point defect in graphene. Low temperature scanning tunneling microscopy (STM) imaging of irradiated graphene on different substrates enabled us to…

Disordered Fermi-Dirac distributions are used to model, within a straightforward and essentially phenomenological Boltzmann equation approach, the electron/hole transport across graphene puddles. We establish, with striking experimental…

介观与纳米尺度物理 · 物理学 2015-05-30 L. Moriconi , D. Niemeyer

In [Phys. Rev. Lett. vol. 119, p. 133901 (2017)] it was argued that two parallel graphene layers in the presence of electron drift support unstable plasmon modes. Here we show that the predicted plasmon instability is an artifact of errors…

介观与纳米尺度物理 · 物理学 2019-11-27 Dmitry Svintsov , Victor Ryzhii

By employing x-ray photoelectron spectroscopy (XPS), we have been able to establish the occurrence of charge-transfer doping in few-layer graphene covered with electron acceptor (TCNE) and donor (TTF) molecules. We have performed…

材料科学 · 物理学 2015-06-04 D. Choudhury , B. Das , D. D. Sarma , C. N. R. Rao

We show that the very small numeric effects discussed in the comment by Schleede et al (arXiv:1005.0497) is not the source of mobility edge predicted in graphene in our letter [Eur. Phys. Lett., 87 (2009) 37002].

强关联电子 · 物理学 2010-05-06 M. Amini , S. A. Jafari , F. Shahbazi

The influence of GaN nanowires on the optical and electrical properties of graphene deposited on them was studied using Raman spectroscopy and microwave induced electron transport method. It was found that interaction with the nanowires…

We investigated the Dirac electrons transmission through a potential barrier in the presence of circularly polarized light. An anomalous photon-assisted enhanced transmission is predicted and explained in a comparison with the well-known…

材料科学 · 物理学 2015-05-30 Andrii Iurov , Godfrey Gumbs , Oleksiy Roslyak , Danhong Huang

We investigate the transport of electrons in disordered and pristine graphene devices. Fano shot noise, a standard metric to assess the mechanism for electronic transport in mesoscopic devices, has been shown to produce almost the same…

介观与纳米尺度物理 · 物理学 2013-09-18 Mario F. Borunda , H. Hennig , Eric J. Heller

New two diemensional structures nanoribbon including phosphorus and germanium atoms are introduced for the nanoelectronic applications. Under various bias voltages, the electronic transport in the systems have been studied within the…

介观与纳米尺度物理 · 物理学 2018-01-09 Maryam Azizi , Badie Ghavami

Inelastic phonon scattering in graphene field-effect transistors (FETs) is studied by numerically solving the Boltzmann transport equation in three dimensional real and phase spaces (x, kx, ky). A kink behavior due to ambipolar transport…

介观与纳米尺度物理 · 物理学 2015-05-27 Jyotsna Chauhan , Jing Guo

Metal/two-dimensional carbon junctions are characterized by using a nanoprobe in an ultrahigh vacuum environment. Significant differences were found in bias voltage (V) dependence of differential conductance (dI/dV) between edge- and…

介观与纳米尺度物理 · 物理学 2012-02-06 Yihong Wu , Ying Wang , Jiayi Wang , Miao Zhou , Aihua Zhang , Chun Zhang , Yanjing Yang , Younan Hua , Baoxi Xu

There has been a rapidly growing interest in optoelectronic properties of graphene and associated structures. Despite the general belief on absence of spontaneous emission in graphene, which is normally attributed to its unique ultrafast…

介观与纳米尺度物理 · 物理学 2015-09-30 Sina Khorasani