Among the factors determining the quantum coherence of the spin in molecular magnets is the presence and the nature of nuclear spins in the molecule. We have explored modifying the nuclear spin environment in Cr7Ni-based molecular nanomagnets by replacing hydrogen atoms with deuterium or the halogen atoms, fluorine or chlorine. We find that the spin coherence, studied at low temperatures by pulsed electron spin resonance, is modified by a range of factors, including nuclear spin and magnetic moment, changes in dynamics owing to nuclear mass, and molecular morphology changes.
@article{arxiv.1409.0821,
title = {Quantum spin coherence in halogen-modified Cr$_7$Ni molecular nanomagnets},
author = {Danielle Kaminski and Amy L. Webber and Christopher J. Wedge and Junjie Liu and Grigore A. Timco and Inigo J. Vitorica-Yrezabal and Eric J. L. McInnes and Richard E. P. Winpenny and Arzhang Ardavan},
journal= {arXiv preprint arXiv:1409.0821},
year = {2014}
}
Comments
8 pages, 5 figures, including supplemental material