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arXiv · 1505.06305

Exciton splitting in semiconducting carbon nanotubes in ultrahigh magnetic fields above 300 T

D. Nakamura·T. Sasaki·W. Zhou·H. Liu·H. Kataura·S. Takeyama
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Abstract

In high magnetic fields, the exciton absorption spectrum of a semiconducting single-walled carbon nanotube splits as a result of Aharonov-Bohm magnetic flux. A magnetic field of 370 T, generated by the electro-magnetic flux compression destructive pulsed magnet-coil technique, was applied to single-chirality semiconducting carbon nanotubes. Using streak spectroscopy, we demonstrated the separation of the independent band-edge exciton states at the K and K' points of the Brillouin zone after the mixing of the dark and bright states above 150 T. These results enable a quantitative discussion of the whole picture of the Aharonov-Bohm effect in single-walled carbon nanotubes.

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D. Nakamura, T. Sasaki, W. Zhou, H. Liu, H. Kataura, S. Takeyama. 2015-05-23. Exciton splitting in semiconducting carbon nanotubes in ultrahigh magnetic fields above 300 T. https://arxiv.org/abs/1505.06305

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