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Quantum Coherence in an Exchange-Coupled Dimer of Single-Molecule Magnets

2003/11/06 by S. Hill, Stephen Hill, R. S. Edwards +4 · 4 citations
Biochemistry, Genetics and Molecular Biology · Chemistry · Materials Science · Physics and Astronomy · #Advanced NMR Techniques and Applications #Electron Spin Resonance Studies #Magnetism in coordination complexes #cond-mat.mes-hall

paper · pdf · doi:10.1126/science.1090082

published as Science, Nov 7 2003: 1015-1018

openalex publication_date 2003/11/06 · arxiv created 2003/11/10 · arxiv updated 2016/08/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

A multi-high-frequency electron paramagnetic resonance method is used to probe the magnetic excitations of a dimer of single-molecule magnets. The measured spectra display well resolved quantum transitions involving coherent superposition states of both molecules. The behavior may be understood in terms of an isotropic superexchange coupling between pairs of single-molecule magnets, in analogy with several recently proposed quantum devices based on artificially fabricated quantum dots or clusters. These findings highlight the potential utility of supramolecular chemistry in the design of future quantum devices based on molecular nanomagnets.

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