Stiller, P. L. and Dirnaichner, A. and Schmid, D. R. and Huettel, A. K. (2020) Magnetic field control of the Franck-Condon coupling of few-electron quantum states. PHYSICAL REVIEW B, 102 (11): 115408. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
Suspended carbon nanotubes display at cryogenic temperatures a distinct interaction between the quantized longitudinal vibration of the macromolecule and its embedded quantum dot, visible via Franck-Condon conductance sidebands in transport spectroscopy. We present data on such sidebands at known absolute number N-el = 1 and N-el = 2 of conduction band electrons and, consequently, well-defined electronic ground and excited states in a clean nanotube device. The interaction evolves only at a finite axial magnetic field and displays a distinct magnetic-field dependence of the Franck-Condon coupling parameter, different for different electronic base states and indicating a valley dependence. Reshaping of the electronic wave function by the magnetic field is discussed as a possible cause of our observations; its impact is demonstrated in a model calculation reproducing the field-dependent coupling.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CARBON; SINGLE; BLOCKADE; OSCILLATIONS; TRANSPORT; DOTS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Andreas K. Hüttel |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 12 Mar 2021 07:26 |
| Last Modified: | 12 Mar 2021 07:26 |
| URI: | https://pred.uni-regensburg.de/id/eprint/43823 |
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