結晶が示す多彩な性質の起源を調べたり、新しい性質を引き出す研究を行っています。 固体物理には多くの既存の研究テーマがありますが、当研究室では研究の新しい潮流を作り出すべく、エネルギーの低いフォノンをキーワードとして、構造のゆらぎと伝導電子が織りなす新奇な現象の開拓に挑戦しています。
With a foundation in solid-state physics and solid-state chemistry, our research focuses on uncovering the origins of various material properties exhibited by crystals and on developing new properties. While many established research themes exist within solid-state physics, our laboratory aims to create a new trend in research: using low-energy phonons as a key concept, we challenge to explore novel phenomena that arise from the interplay between structural fluctuations and itinerant electrons.
What's new
1-5 December 2025
くにびきメッセ@松江で行われた
第2回ISSSC国際会議
で、会場・エクスカージョン・バンケット係を担当しました。本会議の運営の機会をいただきました京都大学・陰山先生に感謝申し上げます。
The 2nd ISSSC International Conference was successfully held at Kunibiki Messe in Matsue. As one of the organizers, Yui Ishii would like to express my sincere gratitude to Professor Kageyama of Kyoto University for giving me the opportunity to be involved in the organization of this conference.
17 September 2025
広島大学で行われた日本物理学会 第80回年次大会にて、「構造量子臨界点が引き起こす結晶中の非周期性とフォノン物性」のタイトルでシンポジウム講演を行いました。
Yui Ishii gave an invited symposium talk titled “Aperiodicity in Crystals and Phonon Properties Caused by Structural Quantum Criticality” at the 80th Annual Meeting of the Physical Society of Japan (16-19 September 2025), held at Hiroshima University.
25 August 2025
X線非弾性散乱の論文投稿を終えました。ご協力くださった皆様に心より感謝申し上げます。
The manuscript on inelastic X-ray scattering has now been submitted. I sincerely thank everyone who supported this work.
6-7 August 2025
オープンキャンパスで研究紹介とデモ展示を行いました。
Yui Ishii gave a research introduction and a demonstration at the Shimane University open campus event.
25 June 2025
東京大学 物性研究所で行われた第7回固体化学フォーラム研究会にて、「構造量子臨界点で見られる周期/非周期構造の共存と物性」のタイトルで招待講演を行いました。
Yui Ishii gave an invited talk entitled “Coexistence of Periodic and Aperiodic Structures at the Structural Quantum Critical Point and Emergent Physical Properties” at the 7th Solid State Chemistry Forum (24-25 June 2025) held at ISSP, the University of Tokyo.
11 June 2025
論文がアクセプトされました。
A paper entitled “Impact of in-plane disorders on the thermal conductivity of AgCrSe2” was accepted in Physical Review Materials. (http://arxiv.org/abs/2506.12377)
24-30 May 2025
SPring-8で蛍光X線ホログラフィーの実験を行いました。お疲れ様でした！
With the support of Prof. Koji Kimura from Nagoya Institute of Technology, Yui Ishii, Dr. Jens R. Stellhorn, and Dr. K. Kobayashi performed X-ray fluorescence holography experiments at the BL37XU beamline of SPring-8.
24-26 April 2025
SPring-8でEXAFSの実験を行いました。お疲れ様でした！
Yui Ishii, Dr. Jens R. Stellhorn, and Dr. K. Kobayashi performed EXAFS experiments at the BL01B1 beamline of SPring-8.
18 March 2025
Yui Ishii gave a poster presentation entitled “Low-temperature thermal conductivity of structural quantum critical materials LaCu6-xAgx” at the JPS 2025 Spring Meeting (online).
5 March 2025
Yui Ishii gave an oral presentation entitled “Observation of soft modes in the structural quantum material BaAl2O4” at the SPRUC meV-IXS group meeting in FY2024 (online).
27 January 2025
材料エネルギー学部 尾原研究室との共同研究の論文がアクセプトされました。
A collaborative paper with Prof. Ohara entitled “Extracting accurate PDF data from in situ environment of materials using X-ray diffractometer” was accepted in Analytical Sciences. (published online, 13 February 2025)