Antilocalization of coulomb blockade in a Ge/Si nanowire

A.P. Higginbotham, F. Kuemmeth, T. Larsen, M. Fitzpatrick, J. Yao, H. Yan, C. Lieber, C. Marcus, APS Physics, Physical Review Letters 112 (2014).


Journal Article | Published | English
Author
Higginbotham, Andrew PIST Austria ; Kuemmeth, Ferdinand; Larsen, Thorvald; Fitzpatrick, Mattias; Yao, Jun; Yan, Hao; Lieber, Charles; Marcus, Charles
Abstract
The distribution of Coulomb blockade peak heights as a function of magnetic field is investigated experimentally in a Ge-Si nanowire quantum dot. Strong spin-orbit coupling in this hole-gas system leads to antilocalization of Coulomb blockade peaks, consistent with theory. In particular, the peak height distribution has its maximum away from zero at zero magnetic field, with an average that decreases with increasing field. Magnetoconductance in the open-wire regime places a bound on the spin-orbit length (lso < 20 nm), consistent with values extracted in the Coulomb blockade regime (lso < 25 nm).
Publishing Year
Date Published
2014-05-29
Journal Title
APS Physics, Physical Review Letters
Acknowledgement
Research supported by the Danish National Research Foundation, the Office of Science at the U.S. Department of Energy, the National Science Foundation (PHY-1104528), and the Defense Advanced Research Projects Agency through the QuEST Program.
Volume
112
Issue
21
Article Number
216806
IST-REx-ID
97

Cite this

Higginbotham AP, Kuemmeth F, Larsen T, et al. Antilocalization of coulomb blockade in a Ge/Si nanowire. APS Physics, Physical Review Letters. 2014;112(21). doi:10.1103/PhysRevLett.112.216806
Higginbotham, A. P., Kuemmeth, F., Larsen, T., Fitzpatrick, M., Yao, J., Yan, H., … Marcus, C. (2014). Antilocalization of coulomb blockade in a Ge/Si nanowire. APS Physics, Physical Review Letters, 112(21). https://doi.org/10.1103/PhysRevLett.112.216806
Higginbotham, Andrew P, Ferdinand Kuemmeth, Thorvald Larsen, Mattias Fitzpatrick, Jun Yao, Hao Yan, Charles Lieber, and Charles Marcus. “Antilocalization of Coulomb Blockade in a Ge/Si Nanowire.” APS Physics, Physical Review Letters 112, no. 21 (2014). https://doi.org/10.1103/PhysRevLett.112.216806.
A. P. Higginbotham et al., “Antilocalization of coulomb blockade in a Ge/Si nanowire,” APS Physics, Physical Review Letters, vol. 112, no. 21, 2014.
Higginbotham AP, Kuemmeth F, Larsen T, Fitzpatrick M, Yao J, Yan H, Lieber C, Marcus C. 2014. Antilocalization of coulomb blockade in a Ge/Si nanowire. APS Physics, Physical Review Letters. 112(21), 216806.
Higginbotham, Andrew P., et al. “Antilocalization of Coulomb Blockade in a Ge/Si Nanowire.” APS Physics, Physical Review Letters, vol. 112, no. 21, 216806, American Physical Society, 2014, doi:10.1103/PhysRevLett.112.216806.
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