Evolution of Local Magnetic State in SmRu4P12 Probed by Muon Spin Relaxation

Takashi U. Ito; Wataru Higemoto; Kazuki Ohishi; Tatsuya Fujimoto; Robert H. Heffner; Nobuhiko Nishida; Kazuhiko Satoh; Hitoshi Sugawara; Yuji Aoki; Daisuke Kikuchi; Hideyuki Sato

doi:10.1143/jpsj.76.053707

Evolution of Local Magnetic State in SmRu₄P₁₂ Probed by Muon Spin Relaxation

Takashi U. Ito, Wataru Higemoto, Kazuki Ohishi, Tatsuya Fujimoto, Robert H. Heffner, Nobuhiko Nishida, Kazuhiko Satoh, Hitoshi Sugawara, Yuji Aoki, Daisuke Kikuchi, Hideyuki Sato

Author information

Takashi U. Ito
Department of Physics, Tokyo Institute of Technology
Advanced Science Research Center, Japan Atomic Energy Agency
Wataru Higemoto
Advanced Science Research Center, Japan Atomic Energy Agency
Kazuki Ohishi
Advanced Science Research Center, Japan Atomic Energy Agency
Tatsuya Fujimoto
Advanced Science Research Center, Japan Atomic Energy Agency
Robert H. Heffner
Advanced Science Research Center, Japan Atomic Energy Agency
Nobuhiko Nishida
Department of Physics, Tokyo Institute of Technology
Kazuhiko Satoh
Graduate School of Science and Engineering, Saitama University
Hitoshi Sugawara
Faculty of Integrated Arts and Sciences, The University of Tokushima
Yuji Aoki
Department of Physics, Tokyo Metropolitan University
Daisuke Kikuchi
Department of Physics, Tokyo Metropolitan University
Hideyuki Sato
Department of Physics, Tokyo Metropolitan University

Keywords: Filled skutterudite, metal–insulator transition, multipole ordering, magnetic fluctuations, muon spin relaxation

JOURNAL RESTRICTED ACCESS

2007 Volume 76 Issue 5 Pages 053707

DOI https://doi.org/10.1143/jpsj.76.053707

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Abstract

We performed muon spin relaxation measurements on randomly aligned single-crystalline samples of SmRu₄P₁₂ down to 0.02 K to investigate static and dynamical magnetic properties in low fields. The local field at the muon site develops gradually with decreasing temperature below a metal–insulator transition temperature of T_MI=16.5 K, growing steeply below T^′=3 K with an accompanying suppression of magnetic fluctuations. We discuss the contribution of a possible octupole moment to the local magnetic states and the magnetic anomaly at T^′.

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