Magnetic field induced multipole orderings studied by resonant x-ray diffraction at very low temperatures with full polarization analysis

2014 Fiscal Year Final Research Report

• Project/Area Number: 24340087
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Hiroshima University
• Principal Investigator: MATSUMURA Takeshi 広島大学, 先端物質科学研究科, 准教授 (00312546)
• Co-Investigator(Kenkyū-buntansha): MICHIMURA Shinji 埼玉大学, 研究機構科学分析支援センター, 助教 (40552310)
• Co-Investigator(Renkei-kenkyūsha): INAMI Toshiya 日本原子力研究開発機構, 量子ビーム応用研究部門, 研究副主幹 (30354989) ; MATSUOKA Eiichi 神戸大学, 大学院理学研究科, 准教授 (20400228) ; SHIINA Ryousuke 新潟大学, 大学院自然科学研究科, 准教授 (30326011) ; NAGAO Tatsuya 群馬大学, 大学院工学研究科, 准教授 (00237497) ; TANIDA Hiroshi 広島大学, 大学院先端物質科学研究科, 助教 (00452615) ; SERA Masafumi 広島大学, 大学院先端物質科学研究科, 教授 (40196978) ; IGA Fumitoshi 茨城大学, 大学院理工学研究科, 教授 (60192473)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 共鳴X線回折 / 多極子秩序 / 磁場誘起相転移

Outline of Final Research Achievements

We have constructed an experimental system for resonant x-ray diffraction at very low temperatures with full polarization analysis, which is utilized for studies of various kinds of multipole ordered states of f-electron compounds. By fully utilizing this system, we have clarified microscopic mechanisms of octupole ordered phase in Ce0.7La0.3B6 and quadrupole ordered states of PrPd3S4, DyPd3S4 and CePd3S4. In addition, we successfully found that the unknown ordered state in SmRu4P12 is an field induced charge ordered state, as has recently been theoretically predicted.

Free Research Field

磁性