Online ISSN: 1884-4111 Print ISSN: 0033-8303
Radioisotopes 65(6): 287-295 (2016)

連載講座Serial Lecture

VI-1 希土類金属系における電子自由度と磁気励起スペクトルVI-1 Electronic Degrees of Freedom and Magnetic Excitation Spectra in Rare-earth-based Metallic Systems

東北大学大学院理学研究科物理学専攻Department of Physics, Graduate School of Science and Faculty of Science, Tohoku University ◇ 980–8578 宮城県仙台市青葉区荒巻字青葉6–3 ◇ 6–3 Aramaki Aza-Aoba, Aoba-ku, Sendai-shi, Miyagi Pref. 980–8578, Japan

発行日:2016年6月15日Published: June 15, 2016


f Electrons in rare-earth compounds are basically localized at rare-earth ions, and carry various degrees of freedom categorized in magnetic dipoles, electric quadrupoles, and high-rank multipoles. Because of interactions with conduction electrons, f electrons provide characteristic physical properties; Kondo effect, competition or cooperation between magnetic and charge orbital ordering, etc. Examples of inelastic neutron scattering studies on determination of quantum states of f electrons, ordering, and elementary excitations originating from many-body interctions are introduced.

Key words: rare-earth element; f electron; crystalline electric field; multipole; magnetic excitation

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