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Title: | Superconductivity in the antiperovskite Dirac-metal oxide Sr[3−x]SnO |
Authors: | Oudah, Mohamed Ikeda, Atsutoshi https://orcid.org/0000-0002-9345-2967 (unconfirmed) Hausmann, Jan Niklas Yonezawa, Shingo https://orcid.org/0000-0002-7476-3604 (unconfirmed) Fukumoto, Toshiyuki Kobayashi, Shingo Sato, Masatoshi Maeno, Yoshiteru |
Author's alias: | オーダ, モハメッド 池田, 敦俊 ハウスマン, ヤン・ニクラス 米澤, 進吾 福元, 敏之 小林, 伸吾 佐藤, 昌利 前野, 悦輝 |
Issue Date: | 12-Dec-2016 |
Publisher: | Springer Nature |
Journal title: | Nature Communications |
Volume: | 7 |
Thesis number: | 13617 |
Abstract: | Investigations of perovskite oxides triggered by the discovery of high-temperature and unconventional superconductors have had crucial roles in stimulating and guiding the development of modern condensed-matter physics. Antiperovskite oxides are charge-inverted counterpart materials to perovskite oxides, with unusual negative ionic states of a constituent metal. No superconductivity was reported among the antiperovskite oxides so far. Here we present the first superconducting antiperovskite oxide Sr[3−x]SnO with the transition temperature of around 5 K. Sr[3]SnO possesses Dirac points in its electronic structure, and we propose from theoretical analysis a possibility of a topological odd-parity superconductivity analogous to the superfluid [3]He-B in moderately hole-doped Sr[3−x]SnO. We envision that this discovery of a new class of oxide superconductors will lead to a rapid progress in physics and chemistry of antiperovskite oxides consisting of unusual metallic anions. |
Description: | マイナス金属イオンを含む酸化物で超伝導を発見 : 逆ペロブスカイト酸化物初の超伝導体. 京都大学プレスリリース. 2016-12-13. |
Rights: | © The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
URI: | http://hdl.handle.net/2433/217595 |
DOI(Published Version): | 10.1038/ncomms13617 |
PubMed ID: | 27941805 |
Related Link: | https://www.kyoto-u.ac.jp/ja/research-news/2016-12-13 |
Appears in Collections: | Journal Articles |
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