2003/06/26 by R. Tiron, Raluca Tiron, Wolfgang Wernsdorfer +5 · 78 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Lanthanide and Transition Metal Complexes #Magnet #Magnetism in coordination complexes #Organic and Molecular Conductors Research #Physics #Quantum #Quantum mechanics #Quantum tunnelling #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.68.140407
published in Physical review. B, Condensed matter 68(14) (American Physical Society) · 4 pages, 4 figures
arxiv created 2003/06/26 · openalex publication_date 2003/10/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A Mn4 single-molecule magnet is used to show that quantum tunneling of magnetization is not suppressed by moderate three-dimensional exchange coupling between molecules. Instead, it leads to an exchange bias of the quantum resonances which allows precise measurements of the effective exchange coupling that is mainly due to weak intermolecular hydrogen bonds. The magnetization versus applied field was recorded on single crystals of [Mn4]2 using an array of micro--superconducting quantum interference devices. The step fine structure was studied via minor hysteresis loops.