Valence band structure and density of states effective mass model of biaxial tensile strained silicon based on k·p theory

doi:10.1088/1674-1056/20/12/127101

Abstract After constructing a stress and strain model, the valence bands of in-plane biaxial tensile strained Si is calculated by k·p method. In the paper we calculate the accurate anisotropy valance bands and the splitting energy between light and heavy hole bands. The results show that the valance bands are highly distorted, and the anisotropy is more obvious. To obtain the density of states (DOS) effective mass, which is a very important parameter for device modeling, a DOS effective mass model of biaxial tensile strained Si is constructed based on the valance band calculation. This model can be directly used in the device model of metal-oxide semiconductor field effect transistor (MOSFET). It also a provides valuable reference for biaxial tensile strained silicon MOSFET design.

Keywords: biaxial tensile strained Si k·p theory valance band density of state effective mass

Received: 31 May 2011
Revised: 19 September 2011
Accepted manuscript online:

PACS:	71.20.Eh	(Rare earth metals and alloys)
	71.20.Nr	(Semiconductor compounds)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 60976068 and 60936005) and the Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China (Grant No. 78083).

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Kuang Qian-Wei(匡潜玮), Liu Hong-Xia(刘红侠), Wang Shu-Long(王树龙), Qin Shan-Shan(秦珊珊), and Wang Zhi-Lin(王志林) Valence band structure and density of states effective mass model of biaxial tensile strained silicon based on k·p theory 2011 Chin. Phys. B 20 127101

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Valence band structure and density of states effective mass model of biaxial tensile strained silicon based on k·p theory

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