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dc.contributor.author | Tonegawa, S | en |
dc.contributor.author | Kasahara, S | en |
dc.contributor.author | Fukuda, T | en |
dc.contributor.author | Sugimoto, K | en |
dc.contributor.author | Yasuda, N | en |
dc.contributor.author | Tsuruhara, Y | en |
dc.contributor.author | Watanabe, D | en |
dc.contributor.author | Mizukami, Y | en |
dc.contributor.author | Haga, Y | en |
dc.contributor.author | Matsuda, T D | en |
dc.contributor.author | Yamamoto, E | en |
dc.contributor.author | Onuki, Y | en |
dc.contributor.author | Ikeda, H | en |
dc.contributor.author | Matsuda, Y | en |
dc.contributor.author | Shibauchi, T | en |
dc.contributor.alternative | 笠原, 成 | ja |
dc.contributor.alternative | 杉本, 邦久 | ja |
dc.contributor.alternative | 水上, 雄太 | ja |
dc.contributor.alternative | 芳賀, 芳範 | ja |
dc.contributor.alternative | 松田, 祐司 | ja |
dc.contributor.alternative | 芝内, 孝禎 | ja |
dc.date.accessioned | 2014-06-25T04:51:33Z | - |
dc.date.available | 2014-06-25T04:51:33Z | - |
dc.date.issued | 2014-06-19 | - |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | http://hdl.handle.net/2433/188534 | - |
dc.description | 直接観測された物質物理学の謎「隠れた秩序」. 京都大学プレスリリース. 2014-06-19. | ja |
dc.description.abstract | Since the 1985 discovery of the phase transition at THO=17.5 K in the heavy-fermion metal URu2Si2, neither symmetry change in the crystal structure nor large magnetic moment that can account for the entropy change has been observed, which makes this hidden order enigmatic. Recent high-field experiments have suggested electronic nematicity that breaks fourfold rotational symmetry, but direct evidence has been lacking for its ground state in the absence of magnetic field. Here we report on the observation of lattice symmetry breaking from the fourfold tetragonal to twofold orthorhombic structure by high-resolution synchrotron X-ray diffraction measurements at zero field, which pins down the space symmetry of the order. Small orthorhombic symmetry-breaking distortion sets in at THO with a jump, uncovering the weakly first-order nature of the hidden-order transition. This distortion is observed only in ultrapure samples, implying a highly unusual coupling nature between the electronic nematicity and underlying lattice. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Nature Publishing Group | en |
dc.rights | © 2014 Macmillan Publishers Limited. | en |
dc.rights | 許諾条件により本文は2014-12-20に公開. | ja |
dc.rights | この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 | ja |
dc.rights | This is not the published version. Please cite only the published version. | en |
dc.subject | Physical sciences | en |
dc.subject | Condensed matter | en |
dc.subject | Materials science | en |
dc.title | Direct observation of lattice symmetry breaking at the hidden-order transition in URu_2Si_2. | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Nature communications | en |
dc.identifier.volume | 5 | - |
dc.relation.doi | 10.1038/ncomms5188 | - |
dc.textversion | author | - |
dc.identifier.artnum | 4188 | - |
dc.identifier.pmid | 24943003 | - |
dc.relation.url | https://www.kyoto-u.ac.jp/ja/research-news/2014-06-19 | - |
dcterms.accessRights | open access | - |
datacite.date.available | 2014-12-20 | - |
出現コレクション: | 学術雑誌掲載論文等 |
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