Computation of electron quantum transport in graphene nanoribbons using GPU

被引：4

作者：

Ihnatsenka, S. ^{[1
]}

机构：

[1] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

来源：

COMPUTER PHYSICS COMMUNICATIONS | 2012年 / 183卷 / 03期

关键词：

Green's function formalism; GPU; Graphene ribbon;

D O I：

10.1016/j.cpc.2011.11.019

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The performance potential for simulating quantum electron transport on graphical processing units (GPUs) is studied. Using graphene ribbons of realistic sizes as an example it is shown that GPUs provide significant speed-ups in comparison to central processing units as the transverse dimension of the ribbon grows. The recursive Green's function algorithm is employed and implementation details on GPUs are discussed. Calculated conductances were found to accumulate significant numerical error due to single-precision floating-point arithmetic at energies close to the charge neutrality point of the graphene. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：543 / 546

页数：4

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