Exploration of the Berry phase interference in a single-molecule magnets of trigonal symmetry

ORAL

Abstract

The quantum behavior of single-molecule magnets (SMM) is mainly governed by their molecular composition and crystallographic symmetries, thus playing an essential role in the tunneling dynamics. We present low temperature magnetometry measurements on a trigonal symmetric, low nuclearity Mn3 SMM. The experiments are designed to explore the behavior of the tunnel splittings within the transverse field magnitude/direction phase space, by applying a transverse field (0-1~T) along different directions within the hard anisotropy plane of the molecules. The expected quantum interference pattern can be understood as an outcome of a competition between different intramolecular magnetic interactions. A multi-spin description using non-collinear zero-field splitting tensors and intra molecular dipolar interactions between the manganese ions is employed to explain the symmetry patterns.

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Authors

  • H.M. Quddusi

    • Department of Physics, University of Central Florida

  • J. Liu

    • Department of Physics, University of Florida

  • P.L. Feng

    • Department of Chemistry and Biochemistry, University of California at San Diego

  • E. del Barco

    • Department of Physics, University of Central Florida

  • S. Hill

    • National High Magnetic Field Laboratory and Department of Physics, Florida State University

  • D.N. Hendrickson

    • Department of Chemistry and Biochemistry, University of California at San Diego