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arXiv · 0808.1492

Giant fluctuations and gate control of the g-factor in InAs Nanowire Quantum Dots

S. Csonka·L. Hofstetter·F. Freitag·S. Oberholzer·T. S. Jespersen·M. Aagesen·J. Nygard·C. Schonenberger
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Abstract

We study the g-factor of discrete electron states in InAs nanowire based quantum dots. The g values are determined from the magnetic field splitting of the zero bias anomaly due to the spin 1/2-Kondo effect. Unlike to previous studies based on 2DEG quantum dots, the g-factors of neighboring electron states show a surprisingly large fluctuation: g can scatter between 2 and 18. Furthermore electric gate tunability of the g-factor is demonstrated.

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S. Csonka, L. Hofstetter, F. Freitag, S. Oberholzer, T. S. Jespersen, M. Aagesen, J. Nygard, C. Schonenberger. 2008-08-12. Giant fluctuations and gate control of the g-factor in InAs Nanowire Quantum Dots. https://doi.org/10.1021/nl802418w

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