Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.246403
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- Flemish Science Foundation (FWO) program of KU Leuven
- INPAC program of KU Leuven
- Methusalem program of KU Leuven
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It is shown that the sign of the product of three Zeeman splitting factors corresponding to the main magnetic axes defines the sign of the Berry phase of a (pseudo) spin in an applied magneic field. Ab initio calculations show that g(X)g(Y)g(Z) < 0 is often the case for lanthanide and transition metal complexes, while we prove that it is never achieved in S complexes with dominant second-order magnetic anisotropy. In the case of polynuclear compounds, it is argued that the signs of individual g(i), i = X, Y, Z, on each metal site can be extracted from experiment. DOI: 10.1103/PhysRevLett.109.246403
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