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

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

2008-08-11

arxiv.org/abs/0808.1492v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 3 figures

Scientific paper

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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