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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2017

Spin-orbit coupling fluctuations as a mechanism of spin decoherence

Résumé

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[V15As6O42(D2O)]center dot 8D(2)O, using high-field electron spin resonance. 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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Dates et versions

hal-01694001 , version 1 (09-05-2018)

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M. Martens, G. Franco, N. S. S Dalal, Sylvain Bertaina, I. Chiorescu. Spin-orbit coupling fluctuations as a mechanism of spin decoherence. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 96 (18), ⟨10.1103/PhysRevB.96.180408⟩. ⟨hal-01694001⟩
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