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Pure Ge quantum well with high hole mobility
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Hassan, A. H. A., Mironov, O. A., Feher, A., Cizmar, E., Gabani, S., Morris, R. J. H. (Richard J. H.), Dobbie, A. (Andrew), Shah, V. A., Myronov, Maksym, Berkutov, I. B., Andrievskii, V. V. and Leadley, D. R. (David R.) (2013) Pure Ge quantum well with high hole mobility. In: ULIS 2013: The 14th International Conference on Ultimate Integration on Silicon, Coventry, UK, 19-21 March 2013. Published in: 14th International Conference on Ultimate Integration on Silicon (ULIS) pp. 117-120. ISBN 9781467348003. doi:10.1109/ULIS.2013.6523527
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Official URL: http://dx.doi.org/10.1109/ULIS.2013.6523527
Abstract
We present magneto-transport properties of the two dimensional hole gas (2DHG) in fully strained Ge quantum wells grown on Si0.2Ge 0.8/Si (100) substrates. Comparison is made between heterostructures that are modulation doped in both normal and inverted configurations. Using Shubnikov de Haas oscillations at temperatures down to 90 mK (inverted structure) and to 1.5K (normal structure), an extremely high hole mobility (0.51-1.34) × 106 cm2/Vs has been observed, along with the lowest value of effective mass (0.063-0.070) m0 to date. The 2DHG is confirmed to be in a pure Ge channel, with low background impurity scattering that improves the 2DHG transport.
Item Type: | Conference Item (Paper) | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | 14th International Conference on Ultimate Integration on Silicon (ULIS) | ||||
Publisher: | IEEE | ||||
ISBN: | 9781467348003 | ||||
Book Title: | 2013 14th International Conference on Ultimate Integration on Silicon (ULIS) | ||||
Official Date: | 2013 | ||||
Dates: |
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Page Range: | pp. 117-120 | ||||
DOI: | 10.1109/ULIS.2013.6523527 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | ULIS 2013: The 14th International Conference on Ultimate Integration on Silicon | ||||
Type of Event: | Conference | ||||
Location of Event: | Coventry, UK | ||||
Date(s) of Event: | 19-21 March 2013 |
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