All-optical observation and reconstruction of spin wave dispersion

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All-optical observation and reconstruction of spin wave dispersion

フォーマット:
雑誌論文
Kyushu Univ. Production 九州大学成果文献
責任表示:
Hashimoto, Yusuke(WPI Advanced Institute for Materials Research, Tohoku University)
橋本, 佑介(東北大学材料科学高等研究所)
Daimon, Shunsuke(WPI Advanced Institute for Materials Research, Tohoku University | Institute for Materials Research, Tohoku University)

大門, 俊介(東北大学材料科学高等研究所)
Iguchi, Ryo(Institute for Materials Research, Tohoku University)
井口, 亮(東北大学材料科学高等研究所)
Oikawa, Yasuyuki(WPI Advanced Institute for Materials Research, Tohoku University)
追川, 康之(東北大学材料科学高等研究所)
Shen, Ka(Kavli Institute of NanoScience, Delft University of Technology)
Koji Sato(WPI Advanced Institute for Materials Research, Tohoku University | Institute for Materials Research, Tohoku University)
Bossini, Davide(Institute for Photon Science and Technology, Graduate School of Science, The University of Tokyo)
Tabuchi, Yutaka(Research Center for Advanced Science and Technology, The University of Tokyo)
Sato, Takuya(Faculty of Sciences, Kyushu University)
佐藤, 琢哉(九州大学大学院理学研究院)
Hillebrands, Burkard(Fachbereich Physik and Landesforschungszntrum OPTIMAS, Technische Univrsität Kaiserslautern)
Bauer, Gerrit E.W.(WPI Advanced Institute for Materials Research, Tohoku University | Institute for Materials Research, Tohoku University | Kavli Institute of NanoScience, Delft University of Technology)
Johansen, Tom H.(Department of Physics, University of Oslo | Institute for Superconducting and Electronic Materials, University of Wollongong)
Kirilyuk, Andrei(Radboud University Nijmegen, Institute for Molecules and Materials)
Rasing, Theo(Radboud University Nijmegen, Institute for Molecules and Materials)
Saito, Eiji(WPI Advanced Institute for Materials Research, Tohoku University | Institute for Materials Research, Tohoku University | Advanced Science Research Center, Japan Atomic Energy Agency)
齊藤, 英治(東北大学材料科学高等研究所 | 日本原子力研究開発機構原子力科学研究部門)

全て表示
本文言語:
英語
出版情報:
Nature Communications. 8, pp. 15859-1-15859-6, 2017-06-12. Nature Publishing Group
バージョン:
Publisher
概要:
To know the properties of a particle or a wave, one should measure how its energy changes with its momentum. The relation between them is called the dispersion relation, which encodes essential information of the kinetics. In a magnet, the wave motion of atomic spins serves as an elementary excitation, called a spin wave, and behaves like a fictitious particle. Although the dispersion relation of spin waves governs many of the magnetic properties, observation of their entire dispersion is one of the challenges today. Spin waves whose dispersion is dominated by magnetostatic interaction are called pure-magnetostatic waves, which are still missing despite of their practical importance. Here, we report observation of the band dispersion relation of pure-magnetostatic waves by developing a table-top all-optical spectroscopy named spin-wave tomography. The result unmasks characteristics of pure-magnetostatic waves. We also demonstrate time-resolved measurements, which reveal coherent energy transfer between spin waves and lattice vibrations. 続きを見る
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