Manipulation of organic polyradicals in a single-molecule transistor
| Autor: | M. Brøndsted Nielsen, Martin Leijnse, Per Hedegård, Jens Paaske, Karsten Jennum, Alexander S. Zyazin, H. S. J. van der Zant, Jeppe Fock |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Heisenberg model Magnetism FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Spectral line Electronic Optical and Magnetic Materials Ferromagnetism Chemical physics 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Antiferromagnetism Molecule Valence bond theory Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology Spectroscopy human activities |
| Zdroj: | Physical Review B, 86 (23), 2012 |
| ISSN: | 1098-0121 |
| Popis: | Inspired by cotunneling spectroscopy of spin-states in a single OPE5-based molecule, we investigate the prospects for electric control of magnetism in purely organic molecules contacted in a three-terminal geometry. Using the gate electrode, the molecule is reversibly switched between three different redox states, with magnetic spectra revealing both ferromagnetic and antiferromagnetic exchange couplings on the molecule. These observations are shown to be captured by an effective low-energy Heisenberg model, which we substantiate microscopically by a simple valence bond description of the molecule. These preliminary findings suggest an interesting route towards functionalized all-organic molecular magnetism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|