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VERY HIGH 2-DIMENSIONAL HOLE GAS MOBILITIES IN STRAINED SILICON-GERMANIUM
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UNSPECIFIED (1994) VERY HIGH 2-DIMENSIONAL HOLE GAS MOBILITIES IN STRAINED SILICON-GERMANIUM. APPLIED PHYSICS LETTERS, 64 (25). pp. 3470-3472. ISSN 0003-6951.
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Abstract
We report on the growth by solid source MBE and characterization of remote doped Si/SiGe/Si two-dimensional hole gas structures. It has been found that by reducing the Ge composition to less-than-or-equal-to 13% and limiting the thickness of the alloy layer, growth temperatures can be increased up to 950-degrees-C for these structures while maintaining good structural integrity and planar interfaces. Record mobilities of 19 820 cm2 V-1 s-1 at 7 K were obtained in normal structures. Our calculations suggest that alloy scattering is not important in these structures and that interface roughness and interface charge scattering limit the low temperature mobilities.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Journal or Publication Title: | APPLIED PHYSICS LETTERS | ||||
Publisher: | AMER INST PHYSICS | ||||
ISSN: | 0003-6951 | ||||
Official Date: | 20 June 1994 | ||||
Dates: |
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Volume: | 64 | ||||
Number: | 25 | ||||
Number of Pages: | 3 | ||||
Page Range: | pp. 3470-3472 | ||||
Publication Status: | Published |
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