Anisotropy of the molecular magnet V${}_{15}$ spin Hamiltonian detected by high-field electron spin resonance

Abstract

The molecular compound K${}_6$[V${}_{15}^{IV}$As${}_6^{III}$O${}_{42}$(H${}_2$O)] $\cdot$ 8H${}_2$O, in short V${}_{15}$, has shown important quantum effects such as coherent spin oscillations. The details of the spin quantum dynamics depend on the exact form of the spin Hamiltonian. In this study, we present a precise analysis of the intramolecular interactions in V${}_{15}$. To that purpose, we performed high-field electron spin resonance measurements at 120 GHz and extracted the resonance fields as a function of crystal orientation and temperature. The data are compared against simulations using exact diagonalization to obtain the parameters of the molecular spin Hamiltonian.

References in corpus (12)

• Will spin-relaxation times in molecular magnets permit quantum information processing?
• Butterfly hysteresis loop and dissipative spin reversal in the S=1/2, V15 molecular complex
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• Master equation approach to line shape in dissipative systems
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• Coherent spin rotation in the presence of a phonon-bottleneck effect

Cited by in corpus (1)

• Spin-Orbit Coupling Fluctuations as a Mechanism of Spin Decoherence