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Midinfrared Photoreflectance Study of InAs-rich InAsSb and GaInAsPSb Indicating Negligible Bowing for the Spin Orbit Splitting Energy

Cripps, S A, Hosea, T J, Krier, A, Smirnov, V, Batty, P J, Zhuang, Q D, Lin, H H, Liu, P W and Tsai, G (2007) Midinfrared Photoreflectance Study of InAs-rich InAsSb and GaInAsPSb Indicating Negligible Bowing for the Spin Orbit Splitting Energy Applied Physics Letters, 90 (17). ISSN 00036951

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Abstract

The authors report on midinfrared photoreflectance measurements of the band gap (E-0) and spin-orbit splitting energies (Delta(0)) in InAs-rich InAsSb and GaInAsPSb samples for varying antimony contents <= 22.5%. The E-0 behavior as a function of Sb content is consistent with the literature value bowing parameter of similar to 670 meV. However, Delta(0) does not exhibit the positive bowing of +1170 meV quoted in the literature: rather, a best fit to their data tentatively suggests a negative bowing of -225 meV. This result is likely to have strong impact due to the importance of the Delta(0) parameter in governing InAsSb-based device performance.

Item Type: Article
Additional Information: Published in <i>Applied Physics Letters,</i> Vol. 90, Iss. 17. Copyright 2007 American Institute of Physics. Click <a href=http://apl.aip.org/>here</a> to access the journal's website.
Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 23 Sep 2013 18:27
URI: http://epubs.surrey.ac.uk/id/eprint/389

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