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Crystalline Electric Field and Kondo Effect in SmOs4Sb12

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Title: Crystalline Electric Field and Kondo Effect in SmOs4Sb12
Authors: Mombetsu, Shota Browse this author
Yanagisawa, Tatsuya Browse this author →KAKEN DB
Hidaka, Hiroyuki Browse this author
Amitsuka, Hiroshi Browse this author
Yasin, Shadi Browse this author
Zherlitsyn, Sergei Browse this author
Wosnitza, Jochen Browse this author
Ho, Pei-Chun Browse this author
Maple, M. Brian Browse this author
Issue Date: 15-Apr-2016
Publisher: Physical Society of Japan
Journal Title: Journal of the Physical Society of Japan
Volume: 85
Issue: 4
Start Page: 043704
Publisher DOI: 10.7566/JPSJ.85.043704
Abstract: Our ultrasound results obtained in pulsed magnetic fields show that the filled-skutterudite compound SmOs4Sb12 has the Γ67 quartet crystalline-electric-field ground state. This fact suggests that the multipolar degrees of freedom of the Γ67 quartet play an important role in the unusual physical properties of this material. On the other hand, the elastic response below ≈20 T cannot be explained using the localized 4f-electron model, which does not take into account the Kondo effect or ferromagnetic ordering. The analysis result suggests the presence of a Kondo-like screened state at low magnetic fields and its suppression at high magnetic fields above 20 T even at low temperatures.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 柳澤 達也

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