Stark shift and field ionization of arsenic donors in 28Si-silicon-on-insulator structures
Stark shift and field ionization of arsenic donors in 28Si-silicon-on-insulator structures
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DOI:
10.1063/1.4876175
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发表时间:
2014-05-12
影响因子:
4
通讯作者:
Morton, J. J. L.
中科院分区:
文献类型:
--
作者:
Lo, C. C.;Simmons, S.;Morton, J. J. L.
We develop an efficient back gate for silicon-on-insulator (SOI) devices operating at cryogenic temperatures and measure the quadratic hyperfine Stark shift parameter of arsenic donors in isotopically purified Si-28-SOI layers using such structures. The back gate is implemented using MeV ion implantation through the SOI layer forming a metallic electrode in the handle wafer, enabling large and uniform electric fields up to 2V/mu m to be applied across the SOI layer. Utilizing this structure, we measure the Stark shift parameters of arsenic donors embedded in the Si-28-SOI layer and find a contact hyperfine Stark parameter of eta(a) = -1.9 +/- 0.7 x 10(-3) mu m(2)/V-2. We also demonstrate electric-field driven dopant ionization in the SOI device layer, measured by electron spin resonance. (C) 2014 AIP Publishing LLC.