Spin bottleneck in resonant tunneling through double quantum dots with different Zeeman splittings

Details Spin bottleneck in resonant tunneling through double quantum dots with different Zeeman splittings Spin bottleneck in resonant tunneling through double quantum dots with different Zeeman splittings

2009-04-07

arxiv.org/abs/0904.1046v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

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Scientific paper

We investigated the electron transport property of the InGaAs/GaAs double quantum dots, the electron g-factors of which are different from each other. We found that in a magnetic field, the resonant tunneling is suppressed even if one of the Zeeman sublevels is aligned. This is because the other misaligned Zeeman sublevels limit the total current. A finite broadening of the misaligned sublevel partially relieves this bottleneck effect, and the maximum current is reached when interdot detuning is half the Zeeman energy difference.

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