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Title

Quantum interference oscillations of the superparamagnetic blocking in an Fe8 molecular nanomagnet

AuthorsBurzurí, Enrique; Luis, Fernando; Montero, Oscar; Barbara, B.; Ballou, R.; Maegawa, S.
Issue Date2013
PublisherAmerican Physical Society
CitationPhysical Review Letters 111: 057201 (2013)
AbstractWe show that the dynamic magnetic susceptibility and the superparamagnetic blocking temperature of an Fe8 single molecule magnet oscillate as a function of the magnetic field Hx applied along its hard magnetic axis. These oscillations are associated with quantum interferences, tuned by Hx, between different spin tunneling paths linking two excited magnetic states. The oscillation period is determined by the quantum mixing between the ground S=10 and excited multiplets. These experiments enable us to quantify such mixing. We find that the weight of excited multiplets in the magnetic ground state of Fe8 amounts to approximately 11.6%. © 2013 American Physical Society.
DescriptionUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.111.057201
URIhttp://hdl.handle.net/10261/117822
DOI10.1103/PhysRevLett.111.057201
Identifiersdoi: 10.1103/PhysRevLett.111.057201
issn: 0031-9007
e-issn: 1079-7114
Appears in Collections:(ICMA) Artículos
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