A Clock Transition in the Cr7Mn Molecular Nanomagnet
Department of Physics and Astronomy, Amherst College, Amherst, MA 01002, USA
Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA
School of Chemistry, The University of Manchester, Manchester M13 9PL, UK
Author to whom correspondence should be addressed.
Current address: Department of Physics, Boston University, Boston, MA 02215, USA.
Received: 21 November 2018 / Revised: 4 January 2019 / Accepted: 10 January 2019 / Published: 14 January 2019
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A viable qubit must have a long coherence time
. In molecular nanomagnets,
is often limited at low temperatures by the presence of dipole and hyperfine interactions, which are often mitigated through sample dilution, chemical engineering and isotope substitution in synthesis. Atomic-clock transitions offer another route to reducing decoherence from environmental fields by reducing the effective susceptibility of the working transition to field fluctuations. The Cr7
Mn molecular nanomagnet, a heterometallic ring, features a clock transition at zero field. Both continuous-wave and spin-echo electron-spin resonance experiments on Cr7
Mn samples, diluted via co-crystallization, show evidence of the effects of the clock transition with a maximum
ns at 1.8 K. We discuss improvements to the experiment that may increase
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Collett, C.A.; Ellers, K.-I.; Russo, N.; Kittilstved, K.R.; Timco, G.A.; Winpenny, R.E.P.; Friedman, J.R. A Clock Transition in the Cr7Mn Molecular Nanomagnet. Magnetochemistry 2019, 5, 4.
Collett CA, Ellers K-I, Russo N, Kittilstved KR, Timco GA, Winpenny REP, Friedman JR. A Clock Transition in the Cr7Mn Molecular Nanomagnet. Magnetochemistry. 2019; 5(1):4.
Collett, Charles A.; Ellers, Kai-Isaak; Russo, Nicholas; Kittilstved, Kevin R.; Timco, Grigore A.; Winpenny, Richard E.P.; Friedman, Jonathan R. 2019. "A Clock Transition in the Cr7Mn Molecular Nanomagnet." Magnetochemistry 5, no. 1: 4.
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