Virginia TechMeltzer, R. S.Yen, W. M.Zheng, H. R.Feofilov, S. P.Dejneka, M. J.Tissue, B. M.Yuan, H. B.2014-05-072014-05-072001-09Meltzer, R. S.; Yen, W. M.; Zheng, H. R.; Feofilov, S. P.; Dejneka, M. J.; Tissue, B. M.; Yuan, H. B., "Evidence for long-range interactions between rare-earth impurity ions in nanocrystals embedded in amorphous matrices with the two-level systems of the matrix," Phys. Rev. B 64, 100201(R) DOI: http://dx.doi.org/10.1103/PhysRevB.64.1002010163-1829http://hdl.handle.net/10919/47843The low-temperature homogeneous broadening of the electronic transitions of Eu3+ and Pr3+ rare-earth impurity ions in Y2O3 and LaF3 nanocrystals embedded into amorphous materials (polymer and oxyfluoride glass ceramics) was studied with hole-burning and fluorescence line narrowing techniques. It is-shown that the homogeneous linewidth is determined by the interaction of the impurity ions contained in the nanocrystals with the two-level systems (TLS's) of the surrounding glass matrix. A comparison of the experiments with a calculation provides direct evidence for the long-range nature of the interaction with the TLS's.application/pdfenIn Copyrightoxyfluoride glass-ceramicsphoton-echohomogeneous linewidthsoptical-transitionsphysics, condensed matterArticle - Refereedhttp://journals.aps.org/prb/abstract/10.1103/PhysRevB.64.100201https://doi.org/10.1103/PhysRevB.64.100201