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【プレスリリース】磁石に隠されていた振動の情報を取り出すことに成功 ――磁気情報デバイス開発に道―― [Press Release] Extracting the hidden coherence within magnets - New possibilities of the development of magnetic information devices.

東京大学大学院工学系研究科の巻内崇彦特任助教、日置友智助教、清水祐樹大学院生、星幸治郎特任研究員、齊藤英治教授(東北大学材料科学高等研究所(WPI-AIMR) 主任研究者、東京大学Beyond AI 研究推進機構 教授を兼務) らを中心とする研究グループは、東北大学材料科学高等研究所(WPI-AIMR)のMehrdad Elyasi助教、Gerrit Ernst-Wilhelm Bauer主任研究者 らと共同で、従来、磁石の中で短い時間しか存在できないと考えられていた磁気振動の情報(コヒーレンス) が桁違いに長い時間隠れて存在できる機構を発見し、それを取り出せることを明らかにしました。


本研究は、東京大学・ソフトバンクBeyond AI連携事業、科学技術振興機構(JST)戦略的創造研究推進事業CREST、戦略的創造研究推進事業ERATO、日本学術振興会(JSPS)科学研究費助成事業、などによる支援を受けて行われました。

本研究成果は、英国科学雑誌「Nature Materials」に2024 年2 月6 日(英国時間)に掲載されました。


・nature com.

・東京大学ホームページ(UTokyo Focus)

A research group consisting of Associate Professor Takahiko Makiuchi, Assistant Professors Tomosato Hioki and Yuki Shimizu, Graduate Student Koujiro Hoshi, and Professor Eiji Saitoh (also affiliated with IMR (Institute for Materials Research, Tohoku University), as Chief Researcher, and concurrently serving as Professor at the Institute for AI and Beyond, The University of Tokyo, collaborated with Mehrdad Elyasi, Assistant Professor at IMR (Institute for Materials Research, Tohoku University) (WPI-AIMR), and Gerrit Ernst-Wilhelm Bauer, Chief Researcher, to discover a mechanism that allows for persistent magnetic coherence in magnets, which was conventionally believed to last only for a short time.

The coherence within magnets has the potential to handle both 0 and 1 information, but maintaining this state for an extended period was considered challenging, limiting its practical applications. However, by successfully extracting the hidden coherence within magnets in this study, new possibilities have opened up for the development of magnetic information devices.

This research was supported by the Beyond AI Joint Project which is a collaborative initiative launched by the University of Tokyo and SoftBank, CREST-JST, ERATO-JST and Grants-in-Aid for Scientific Research (JSPS).

The findings of this research was published in the British scientific journal "Nature Materials" on February 6, 2024 (UK time).

・The full press release (in Japanese only) in PDF.

・nature com.

・UTokyo Focus

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