Publication Date

2019

Journal or Book Title

Magnetochemistry

Abstract

A viable qubit must have a long coherence time T2'>T2T2 . In molecular nanomagnets, T2'>T2T2 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 Cr7Mn molecular nanomagnet, a heterometallic ring, features a clock transition at zero field. Both continuous-wave and spin-echo electron-spin resonance experiments on Cr7Mn samples, diluted via co-crystallization, show evidence of the effects of the clock transition with a maximum T2∼390'>T2∼390T2∼390 ns at 1.8 K. We discuss improvements to the experiment that may increase T2'>T2T2 further.

ORCID

https://orcid.org/0000-0001-7561-9041, https://orcid.org/0000-0002-9852-7454

DOI

https://doi.org/10.3390/magnetochemistry5010004

Volume

5

Issue

1

License

UMass Amherst Open Access Policy

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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