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Theory of valence mixing for rare-earth compounds

✍ Scribed by C.E.T. Gonçalves da Silva; L.M. Falicov


Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
297 KB
Volume
17
Category
Article
ISSN
0038-1098

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Phonon bound states in the mixed valence
✍ Hisao Jichu; Kyuya Baba; Tamifusa Matsuura; Yoshihiro Kuroda; A.D.S. Nagi 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 283 KB

We show the possibility of the formation of two-phonon bound states which give rise to a localized phonon mode like the one discovered recently in the compound Sm0.75Y0.25 S. A crucial point in our model is to take account of an indirect two-phonon interaction due to local lattice-distortions around