First-principles analysis of electron-phonon interactions in graphene

被引：193

作者：

Borysenko, K. M. ^{[1
]}

Mullen, J. T. ^{[2
]}

Barry, E. A. ^{[1
]}

Paul, S. ^{[2
]}

Semenov, Y. G. ^{[1
]}

Zavada, J. M. ^{[1
]}

Nardelli, M. Buongiorno ^{[2
,3
]}

Kim, K. W. ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA

[2] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[3] Oak Ridge Natl Lab, CSMD, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.81.121412

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electron-phonon interaction in monolayer graphene is investigated using density-functional perturbation theory. The results indicate that the electron-phonon interaction strength is of comparable magnitude for all four in-plane phonon branches and must be considered simultaneously. Moreover, the calculated scattering rates suggest an acoustic-phonon contribution that is much weaker than previously thought, revealing an important role of optical phonons even at low energies. Accordingly it is predicted, in good agreement with a recent measurement, that the intrinsic mobility of graphene may be more than an order of magnitude larger than the already high values reported in suspended samples.

引用

页数：4

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