Journal
NANO LETTERS
Volume 16, Issue 3, Pages 2066-2071Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b00102
Keywords
Organic radicals; spintronics; molecular electronics; polyradicals; magnetic exchange
Categories
Funding
- advanced ERC grant (Mols@Mols)
- Dutch Organization for Fundamental research (NWO/FOM)
- Networking Research Center on Bioengineering, Biomaterials, and Nano medicine (CIBER-BBN) DGI (Spain) [MAT2012-30924]
- MINECO (BEWELL) [CTQ2013-40480-R, PRI-PIBIN-2011-1028, CTQ2012-30751]
- Generalitat de Catalunya [2014-SGR-17, 2014-SGR-97, 2014-SGR-97, XRQTC]
- EU FP7 program through ACMOL [618082]
- Dutch funding organization NWO (VENI)
- EU project ITN iSwitch [642196]
- ICREA Funding Source: Custom
Ask authors/readers for more resources
The magnetic properties of a nanoscale system are inextricably linked to its local environment. In adatoms on surfaces and inorganic layered structures, the exchange interactions result from the relative lattice positions, layer thicknesses, and other environmental parameters. Here, we report on a sample-dependent sign inversion of the magnetic exchange coupling between the three unpaired spins of an organic triradical molecule embedded in a three-terminal device. This ferro-to-antiferromagnetic transition is due to structural distortions and results in a high-to-low spin ground state change in a molecule traditionally considered to be a robust high-spin quartet. Moreover, the flexibility of the molecule yields an in situ electric tunability of the exchange coupling via the gate electrode. These findings open a route to the controlled reversal of the magnetic states in organic molecule-based nanodevices by mechanical means, electrical gating, or chemical tailoring.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available