E-kRelation of Valence Band in Arbitrary Orientation/Typical Plane Uniaxially Strained

Author:

Chao Zhang1,Da-Qing Xu1,Shu-Lin Liu1,Ning-Zhuang Liu1

Affiliation:

1. School of Electrical and Control Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

Abstract

Uniaxial strain technology is an effective way to improve the performance of the small size CMOS devices, by which carrier mobility can be enhanced. TheE-krelation of the valence band in uniaxially strained Si is the theoretical basis for understanding and enhancing hole mobility. The solving procedure of the relation and its analytic expression were still lacking, and the compressive results of the valence band parameters in uniaxially strained Si were not found in the references. So, theE-krelation has been derived by taking strained Hamiltonian perturbation into account. And then the valence band parameters were obtained, including the energy levels at Γ point, the splitting energy, and hole effective masses. Our analytic models and quantized results will provide significant theoretical references for the understanding of the strained materials physics and its design.

Publisher

Hindawi Limited

Subject

Condensed Matter Physics

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