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Incommensurate magnetic ordered phase with enhanced low-temperature magnetic specific heat in SmAu$$_{3}$$Al$$_{7}$$

東中 隆二*; Iwami, Takuma*; Saito, Kosuke*; 伊藤 孝   ; 田端 千紘; 金子 耕士   ; 大原 高志   ; 鬼柳 亮嗣  ; 中尾 朗子*; 中村 惇平*; 髭本 亘  ; 幸田 章宏*; 神戸 振作  ; 青木 勇二*; 松田 達磨*

Higashinaka, Ryuji*; Iwami, Takuma*; Saito, Kosuke*; Ito, Takashi; Tabata, Chihiro; Kaneko, Koji; Ohara, Takashi; Kiyanagi, Ryoji; Nakao, Akiko*; Nakamura, Jumpei*; Higemoto, Wataru; Koda, Akihiro*; Kambe, Shinsaku; Aoki, Yuji*; Matsuda, Tatsuma*

Neutron scattering and muon spin rotation (mSR) measurements on single-crystal SmAu$$_{3}$$Al$$_{7}$$ reveal magnetically ordered states associated with successive transitions at 2.8 K and 0.9 K. Magnetic Bragg peaks appear below TN with an incommensurate propagation vector q = (0.30, 0, 1.33). mSR detects spontaneous internal fields below 2.8 K, and the spectral shape is consistent with the incommensurate magnetic ordering. No anomalies are observed at 0.9 K, indicating that the magnetic structure remains essentially unchanged.

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分野:Physics, Multidisciplinary

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