Anisotropy of the molecular magnet V15 spin Hamiltonian detected by high-field electron spin resonance

M. Martens; J. Van Tol; N. S. Dalal; S. Bertaina; B. Barbara; B. Tsukerblat; A. Müller; S. Garai; S. Miyashita; I. Chiorescu

doi:10.1103/PhysRevB.89.195439

Anisotropy of the molecular magnet V15 spin Hamiltonian detected by high-field electron spin resonance

M. Martens, J. Van Tol, N. S. Dalal, S. Bertaina, B. Barbara, B. Tsukerblat, A. Müller, S. Garai, S. Miyashita, I. Chiorescu

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The molecular compound K6[V15IVAs6IIIO42(H2O)] â€‰·â€‰8H2O, in short V15, 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 V15. 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.

Original language	English
Article number	195439
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	89
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevB.89.195439
State	Published - 27 May 2014

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Martens, M., Van Tol, J., Dalal, N. S., Bertaina, S., Barbara, B., Tsukerblat, B., Müller, A., Garai, S., Miyashita, S., & Chiorescu, I. (2014). Anisotropy of the molecular magnet V15 spin Hamiltonian detected by high-field electron spin resonance. Physical Review B - Condensed Matter and Materials Physics, 89(19), Article 195439. https://doi.org/10.1103/PhysRevB.89.195439

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abstract = "The molecular compound K6[V15IVAs6IIIO42(H2O)] {\^a}€‰·{\^a}€‰8H2O, in short V15, 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 V15. 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.",

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AU - Martens, M.

AU - Van Tol, J.

AU - Dalal, N. S.

AU - Bertaina, S.

AU - Barbara, B.

AU - Tsukerblat, B.

AU - Müller, A.

AU - Garai, S.

AU - Miyashita, S.

AU - Chiorescu, I.

PY - 2014/5/27

Y1 - 2014/5/27

N2 - The molecular compound K6[V15IVAs6IIIO42(H2O)] â€‰·â€‰8H2O, in short V15, 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 V15. 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.

AB - The molecular compound K6[V15IVAs6IIIO42(H2O)] â€‰·â€‰8H2O, in short V15, 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 V15. 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.

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DO - 10.1103/PhysRevB.89.195439

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Anisotropy of the molecular magnet V15 spin Hamiltonian detected by high-field electron spin resonance

Abstract

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