Dirnaichner, Alois and Grifoni, Milena and Pruefling, Andreas and Steininger, Daniel and Huettel, Andreas K. and Strunk, Christoph (2015) Transport across a carbon nanotube quantum dot contacted with ferromagnetic leads: Experiment and nonperturbative modeling. PHYSICAL REVIEW B, 91 (19): 195402. ISSN 1098-0121, 1550-235X
Full text not available from this repository. (Request a copy)Abstract
We present measurements of tunneling magnetoresistance (TMR) in single-wall carbon nanotubes attached to ferromagnetic contacts in the Coulomb blockade regime. Strong variations of the TMR with gate voltage over a range of four conductance resonances, including a peculiar double-dip signature, are observed. The data are compared to calculations in the "dressed second order" (DSO) framework. In this nonperturbative theory, conductance peak positions and linewidths are affected by charge fluctuations incorporating the properties of the carbon nanotube quantum dot and the ferromagnetic leads. The theory is able to qualitatively reproduce the experimental data.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SPIN TRANSPORT; MAGNETORESISTANCE; TEMPERATURE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Jul 2019 08:57 |
| Last Modified: | 18 Jul 2019 08:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/5513 |
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