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arXiv · 1505.03177

Spin-Orbit Coupling Fluctuations as a Mechanism of Spin Decoherence

M. Martens·G. Franco·N. S. Dalal·S. Bertaina·I. Chiorescu
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Abstract

We discuss a general framework to address spin decoherence resulting from fluctuations in a spin Hamiltonian. We performed a systematic study on spin decoherence in the compound K$_6$[V$_{15}$As$_6$O$_{42}$(D$_2$O)] $\cdot$ 8D$_2$O, using high-field Electron Spin Resonance (ESR). By analyzing the anisotropy of resonance linewidths as a function of orientation, temperature and field, we find that the spin-orbit term is a major decoherence source. The demonstrated mechanism can alter the lifetime of any spin qubit and we discuss how to mitigate it by sample design and field orientation.

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M. Martens, G. Franco, N. S. Dalal, S. Bertaina, I. Chiorescu. 2017-10-28. Spin-Orbit Coupling Fluctuations as a Mechanism of Spin Decoherence. https://doi.org/10.1103/physrevb.96.180408

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