Strain-mediated ion-ion interaction in rare-earth-doped solids

• URL: http://arxiv.org/abs/2301.05531v2
• Date: Fri, 28 Apr 2023 12:38:13 GMT
• Title: Strain-mediated ion-ion interaction in rare-earth-doped solids
• Authors: Anne Louchet-Chauvet and Thierry Chaneli\`ere
• Abstract summary: We show from a macroscopic model how it yields a disregarded ion-ion interaction mediated by mechanical strain. We quantitatively assess and compare the magnitude of these three interactions from the angle of the instantaneous diffusion mechanism.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: It was recently shown that the optical excitation of rare-earth ions produces a local change of the host matrix shape, attributed to a change of the rare-earth ion's electronic orbital geometry. In this work we investigate the consequences of this piezo-orbital backaction and show from a macroscopic model how it yields a disregarded ion-ion interaction mediated by mechanical strain. This interaction scales as $1/r^3$, similarly to the other archetypal ion-ion interactions, namely electric and magnetic dipole-dipole interactions. We quantitatively assess and compare the magnitude of these three interactions from the angle of the instantaneous spectral diffusion mechanism, and reexamine the scientific literature in a range of rare-earth doped systems in the light of this generally underestimated contribution.

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