Magnetic Anisotropy in the Molecular Complex V15

Abstract

We apply degenerate perturbation theory to investigate the effects of magnetic anisotropy in the magnetic molecule V15. Magnetic anisotropy is introduced via Dzyaloshinskii-Moriya (DM) interaction in the full Hilbert space of the system. Our model provides an explanation for the rounding of transitions in the magnetization as a function of applied field at low temperature, from which an estimate for the DM interaction is found. We find that the calculated energy differences of the lowest energy states are consistent with the available data. Our model also offers a novel explanation for the hysteretic nature of the time-dependent magnetization data.

Final version

References in corpus (7)

• Spin-parity dependent tunneling of magnetization in single-molecule magnets
• Anisotropic Spin Exchange in Pulsed Quantum Gates
• Properties of low-lying states in some high-nuclearity Mn, Fe and V clusters: Exact studies of Heisenberg models
• Low-energy spin excitations in the molecular magnetic cluster V15
• Quantum Tunneling in Half-Integer Spin Systems
• Spin dynamics and coherent tunnelling in the molecular magnetic rings Fe_6 and Fe_8
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Cited by in corpus (11)

• Adiabatic Landau-Zener-Stückelberg transition with or without dissipation in low spin molecular system V15
• Tuning the magnetic ground state of a novel tetranuclear Nickel(II) molecular complex by high magnetic fields
• Mechanism of Ground State Selection in the Frustrated Molecular Spin Cluster V15
• Magnetocaloric properties of V6 molecular magnet
• Zero-temperature magnetic response of small fullerene molecules at the classical and full quantum limit
• Magnetic energy-level diagrams of high-spin (Mn${}_{12}$-acetate) and low-spin (V${}_{15}$) molecules
• Dzyaloshinskii-Moriya interaction in transport through single molecule transistors
• Temperature dependence of ESR intensity for the nanoscale molecular magnet V15
• The ESR intensity and the Dzyaloshinsky-Moriya interaction of the nanoscale molecular magnet V15
• Influence of the biquadratic exchange interaction in the classical ground state magnetic response of the antiferromagnetic icosahedron
• Thermodynamic and magnetocaloric properties of a triangular spin-1/2 cluster with Dzyaloshinskii-Moriya interaction