期刊
PHYSICAL REVIEW B
卷 100, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.100.165107
关键词
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资金
- Investissements d'Avenir du LabEx PALM ExciMol, ATERSIIQ, and OptoRF-Er [ANR-10-LABX-0039-PALM]
- MALT project from ITMO Cancer AVIESAN (Alliance Nationale pour les Sciences de la Vie et de la Sante, National Alliance for Life Sciences & Health) within the framework of the Cancer Plan [C16027HS]
We investigate the erbium flip-flop dynamics as a limiting factor of the electron-spin lifetime and more generally as an indirect source of decoherence in rare-earth-doped insulators. Despite the random isotropic arrangement of dopants in the host crystal, the dipolar interaction strongly depends on the magnetic field orientation following the strong anisotropy of the g factor. In Er3+ : Y2SiO5, we observe in a 10-ppm doped sample a 3 orders-of-magnitude variation of the erbium flip-flop rate, as expected from the dipolar coupling term between identical spins with an anisotropic g tensor. We can estimate the correct order of magnitude for a 50-ppm concentration, but we can only reproduce qualitatively the orientational variation of the flip-flop rate.
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