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We demonstrate theoretically that most of the observed transport properties of graphene sheets at zero magnetic field can be explained by scattering from charged impurities. We find that, contrary to common perception, these properties are…

介观与纳米尺度物理 · 物理学 2008-01-14 Shaffique Adam , E. H. Hwang , Victor Galitski , S. Das Sarma

Carrier transport in gated 2D graphene monolayers is theoretically considered in the presence of scattering by random charged impurity centers with density $n_i$. Excellent quantitative agreement is obtained (for carrier density $n >…

介观与纳米尺度物理 · 物理学 2007-10-09 E. H. Hwang , S. Adam , S. Das Sarma

Since the experimental realization of graphene1, extensive theoretical work has focused on short-range disorder2-5, ''ripples''6, 7, or charged impurities2, 3, 8-13 to explain the conductivity as a function of carrier density…

其他凝聚态物理 · 物理学 2009-11-13 J. H. Chen , C. Jang , M. S. Fuhrer , E. D. Williams , M. Ishigami

Motivated by recent experiments on suspended graphene showing carrier mobilities as high as 200,000 cm^2/Vs, we theoretically calculate transport properties assuming Coulomb impurities as the dominant scattering mechanism. We argue that the…

材料科学 · 物理学 2008-05-11 S. Adam , S. Das Sarma

We present a kinetic equation approach to investigate dc transport properties of graphene in the diffusive regime considering long-range electron-impurity scattering. In our study, the effects of interband correlation (or polarization) on…

材料科学 · 物理学 2009-11-13 S. Y. Liu , X. L. Lei , Norman J. M. Horing

We develop a theory for density, disorder, and temperature dependent electrical conductivity of bilayer graphene in the presence of long-range charged impurity scattering as well as an additional short-range disorder of independent origin,…

介观与纳米尺度物理 · 物理学 2010-04-21 S. Das Sarma , E. H. Hwang , E. Rossi

Applying a quasiclassical equation to carriers in graphene we found a way how to distinguish between samples with the domination of short and long range scatterers from the conductivity measurements. The model proposed explains recent…

介观与纳米尺度物理 · 物理学 2008-06-12 Maxim Trushin , John Schliemann

Understanding disorder in graphene is essential for electronic applications; in contrast to conventional materials, the extraordinarily low electron-phonon scattering1, 2 in graphene implies that disorder3-7 dominates its resistivity even…

介观与纳米尺度物理 · 物理学 2011-11-14 Jun Yan , Michael S. Fuhrer

We review the physics of charged impurities in the vicinity of graphene. The long-range nature of Coulomb impurities affects both the nature of the ground state density profile as well as graphene's transport properties. We discuss the…

介观与纳米尺度物理 · 物理学 2009-05-29 S. Adam , E. H. Hwang , E. Rossi , S. Das Sarma

Using the semi-classical Boltzmann theory, we calculate the conductivity as function of the carrier density. As usually, we include the scattering from charged impurities, but conclude that the estimated impurity density is too low in order…

介观与纳米尺度物理 · 物理学 2009-11-13 T. Stauber , N. M. R. Peres , F. Guinea

The full counting statistics for the charge transport through an undoped graphene sheet in the presence of strong potential impurities is studied. Treating the scattering off the impurity in the s-wave approximation, we calculate the…

介观与纳米尺度物理 · 物理学 2013-05-29 M. Titov , P. M. Ostrovsky , I. V. Gornyi , A. Schuessler , A. D. Mirlin

A general theory is developed to describe graphene with arbitrary number of isolated impurities. The theory provides a basis for an efficient numerical analysis of the charge transport and is applied to calculate the minimal conductivity of…

介观与纳米尺度物理 · 物理学 2011-03-28 P. M. Ostrovsky , M. Titov , S. Bera , I. V. Gornyi , A. D. Mirlin

We calculate the carrier density dependent ground state properties of graphene in the presence of random charged impurities in the substrate taking into account disorder and interaction effects non-perturbatively on an equal footing in a…

介观与纳米尺度物理 · 物理学 2008-10-17 Enrico Rossi , S. Das Sarma

Irradiation of graphene on SiO2 by 500 eV Ne and He ions creates defects that cause intervalley scattering as evident from a significant Raman D band intensity. The defect scattering gives a conductivity proportional to charge carrier…

材料科学 · 物理学 2009-06-12 Jian-Hao Chen , W. G. Cullen , C. Jang , M. S. Fuhrer , E. D. Williams

A method is suggested to separately determine the surface density of positively and negatively charged impurities that limit the mobility in a graphene monolayer. The method is based on the exact result for the transport cross-section,…

介观与纳米尺度物理 · 物理学 2007-09-05 D. S. Novikov

We study electron transport properties of a monoatomic graphite layer (graphene) with different types of disorder. We show that the transport properties of the system depend strongly on the character of disorder. Away from half filling, the…

介观与纳米尺度物理 · 物理学 2007-05-23 P. M. Ostrovsky , I. V. Gornyi , A. D. Mirlin

We investigate the effects of charged impurity distributions and carrier-carrier interactions on electronic transport in graphene on SiO$_2$ by employing a self-consistent coupled simulation of carrier transport and electrodynamics. We show…

介观与纳米尺度物理 · 物理学 2014-05-21 N. Sule , S. C. Hagness , I. Knezevic

The main goal of our study was investigation of the influence of the deformations (sufficiently large for the establishing the non-zero gap) on electrotransport properties of impure graphene. To achieve this purpose, we implemented the…

介观与纳米尺度物理 · 物理学 2017-12-27 Igor Yu. Sagalianov , Yuriy I. Prylutskyy , Taras M. Radchenko , Valentyn A. Tatarenko

Motivated by the experimental measurement of electrical and hall conductivity, thermopower and Nernst effect, we calculate the longitudinal and transverse electrical and heat transport in graphene in the presence of unitary scatterers as…

材料科学 · 物理学 2015-05-19 Vincent Ugarte , Vivek Aji , C. M. Varma

We theoretically revisit graphene transport properties as a function of carrier density, taking into account possible correlations in the spatial distribution of the Coulomb impurity disorder in the environment. We find that the charged…

介观与纳米尺度物理 · 物理学 2011-10-06 Qiuzi Li , E. H. Hwang , E. Rossi , S. Das Sarma
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