Marganska, M. and Schmid, D. R. and Dirnaichner, A. and Stiller, P. L. and Strunk, Ch. and Grifoni, M. and Huettel, A. K. (2019) Shaping Electron Wave Functions in a Carbon Nanotube with a Parallel Magnetic Field. PHYSICAL REVIEW LETTERS, 122 (8): 086802. ISSN 0031-9007, 1079-7114
Full text not available from this repository. (Request a copy)Abstract
A magnetic field, through its vector potential, usually causes measurable changes in the electron wave function only in the direction transverse to the field. Here, we demonstrate experimentally and theoretically that, in carbon nanotube quantum dots combining cylindrical topology and bipartite hexagonal lattice, a magnetic field along the nanotube axis impacts also the longitudinal profile of the electronic states. With the high (up to 17 T) magnetic fields in our experiment, the wave functions can be tuned all the way from a "half-wave resonator" shape with nodes at both ends to a "quarter-wave resonator" shape with an antinode at one end. This in turn causes a distinct dependence of the conductance on the magnetic field. Our results demonstrate a new strategy for the control of wave functions using magnetic fields in quantum systems with a nontrivial lattice and topology.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AHARONOV-BOHM OSCILLATIONS; TRANSPORT; SPIN; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Andreas K. Hüttel |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 Apr 2020 06:09 |
| Last Modified: | 17 Apr 2020 06:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27522 |
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