Butterfly Hysteresis Loop and Dissipative Spin Reversal in theS<mml:mspace/>=<mml:mspace/>1/2,V15Molecular Complex

1999/10/31 by I. Chiorescu, W. Wernsdorfer, Wolfgang Wernsdorfer +5 · 252 citations
Biochemistry, Genetics and Molecular Biology · Materials Science · Physics and Astronomy · #Condensed matter physics #Coupling (piping) #Dissipative system #Electron Spin Resonance Studies #Hysteresis #Lanthanide and Transition Metal Complexes #Magnetic field #Magnetism in coordination complexes #Magnetization #Materials science #Physics #Quantum mechanics #Relaxation (psychology) #Spin (aerodynamics) #Statistical physics #Thermodynamics #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.84.3454

published in Physical Review Letters 84(15), 3454-3457 (American Physical Society) · LaTeX/RevTeX, 3 figures.Approved for publication in PRL

arxiv created 2000/02/18 · openalex publication_date 2000/04/10 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Time resolved magnetization measurements have been performed on a spin 1/2 molecular complex, so-called V15. Despite the absence of a barrier, magnetic hysteresis is observed over a time scale of several seconds. A detailed analysis in terms of a dissipative two-level model is given, in which fluctuations and splittings are of the same energy. Spin-phonon coupling leads to long relaxation times and to a particular "butterfly" hysteresis loop.

Citations

• Dynamics of the dissipative two-state system

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