Mechanism of Ground State Selection in the Frustrated Molecular Spin Cluster V15

Abstract

We report an inelastic neutron scattering (INS) study under a magnetic field on the frustrated molecular spin cluster $V_{15}$. Several field-dependent transitions are observed and provide a comprehensive understanding of the low-energy quantum spin states. The energy gap $2{\Delta }_0\approx 27(3)\mu$eV between the two lowest $S=1/2$ Kramers doublets is unambiguously attributed to a symmetry lowering of the cluster. The INS data are mapped onto an S=1/2 Antiferromagnetic Heisenberg triangle with scalene distortion. A quantitative description of the wavefunction mixing within the ground state is derived.

To be published in Europhysics Letters 7 pages, 3 figures

References in corpus (8)

• Spin Ice State in Frustrated Magnetic Pyrochlore Materials
• Magnetic Superstructure in the Two-Dimensional Quantum Antiferromagnet SrCu2(BO3)2
• Butterfly hysteresis loop and dissipative spin reversal in the S=1/2, V15 molecular complex
• Adiabatic Landau-Zener-Stückelberg transition with or without dissipation in low spin molecular system V15
• Non-adiabatic Landau-Zener transitions in low spin molecular magnet V15
• Low-energy spin excitations in the molecular magnetic cluster V15
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• Magnetic Anisotropy in the Molecular Complex V15

Cited by in corpus (5)

• Magnetic Cluster Excitations
• Tunneling, Remanence, and Frustration in Dysprosium based Endohedral Single Molecule Magnets
• Field-dependent superradiant quantum phase transition of molecular magnets in microwave cavities
• Anisotropy of the molecular magnet V${}_{15}$ spin Hamiltonian detected by high-field electron spin resonance
• Polarization dependence of spin-electric transitions in molecular exchange qubits