Study of spin dynamics in diluted magnetic materials using the soft X-ray resonant Kerr effect
Project/Area Number |
26400328
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | The University of Tokyo |
Principal Investigator |
Matsuda Iwao 東京大学, 物性研究所, 准教授 (00343103)
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Co-Investigator(Kenkyū-buntansha) |
山本 達 東京大学, 物性研究所, 助教 (50554705)
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Research Collaborator |
Moras P. Instituto di Struttura della Materia, Consiglio Nazionalle delle Ricerche
Kiskinova M. Elettra-Sincrotrone Trieste
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Project Period (FY) |
2014-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
|
Keywords | 磁気光学効果 / 軟X線 / 自由電子レーザー / 磁性体 / スピンダイナミクス / カー効果 / 共鳴磁気光学カー効果 / スピントロニクス / 高次高調波レーザー / 磁気光学 / 磁性 / レーザー / 放射光 |
Outline of Final Research Achievements |
The magneto-optical Kerr effect (MOKE) has been used to investigate magnetic information of materials. Tuning the probing photon energy at an absorption-edge of a material, typically in the ultra-vacuum ray to soft X-ray region, we discovered that the Kerr rotation angles become several 10 times larger than those measured with the conventional visible light. Since this resonant MOKE allows us to probe a magnetic material with element selectivity, large-signals and a possible extension to the time-resolved measurement, we developed the technique in the present research. Using a ultrashort-pulse soft X-ray laser, such as a free electron laser, we succeeded in tracing ultrafast spin inversion at the Fe atom in a GdFeCo crystal and in performing the femto-seconds time-resolved measurement on < 1nm-thick Fe film buried in the heterostructure.
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Report
(4 results)
Research Products
(23 results)
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[Journal Article] Capturing ultrafast magnetic dynamics by time-resolved soft x-ray magnetic circular dichroism2017
Author(s)
Kou Takubo, Kohei Yamamoto, Yasuyuki Hirata, Yuichi Yokoyama, Yuya Kubota, Shingo Yamamoto, Susumu Yamamoto, Iwao Matsuda, Shik Shin, Takeshi Seki, Koki Takanashi, and Hiroki Wadati
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Journal Title
Appl. Phys. Lett.
Volume: 110
Issue: 16
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Interface Electronic Structure at the Topological Insulator - Ferrimagnetic Insulator Junction2017
Author(s)
Y. Kubota, K. Murata, J. Miyawaki, K. Ozawa, Kenichi, M. Onbasli, T. Shirasawa, B. Feng, Sh. Yamamoto, Ro-Ya Liu, S. Yamamoto, S. Mahatha, P. Sheverdyaeva, P. Moras, C. Ross, S. Suga, Y. Harada, K. Wang, and I. Matsuda
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Journal Title
J. Phys. Condens. Matter
Volume: 29
Issue: 5
Pages: 0550021-6
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Polarization dependence of resonant magneto-optical Kerr effect measured by two types of figure-8 undulators2016
Author(s)
Y. Kubota, Sh. Yamamoto, T. Someya, Y. Hirata, K. Takubo, M. Araki, M. Fujisawa, K. Yamamoto, Y. Yokoyama, M. Taguchi, S. Yamamoto, M. Tsunoda, H. Wadati, S. Shin, and I. Matsuda
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Journal Title
Journal of Electron Spectroscopy and Related Phenomena
Volume: 印刷中
Pages: 17-20
DOI
Related Report
Peer Reviewed
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[Journal Article] Spin texture in type-II Weyl semimetal WTe22016
Author(s)
Baojie Feng, Yang-Hao Chan, Ya Feng, Ro-Ya Liu, Mei-Yin Chou, Kenta Kuroda, Koichiro Yaji, Ayumi Harasawa, Paolo Moras, Alexei Barinov, Walid Malaeb, C´edric Bareille, Takeshi Kondo, Shik Shin, Fumio Komori, Tai-Chang Chiang, Youguo Shi, and Iwao Matsuda
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Journal Title
Phys. Rev. B
Volume: 94
Issue: 19
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Ultrafast spin-switching of a ferrimagnetic alloy at room temperature traced by resonant magneto-optical Kerr effect using a seeded free electron laser2015
Author(s)
Sh. Yamamoto, M. Taguchi, T. Someya, Y. Kubota, S. Ito, H. Wadati, M. Fujisawa, F. Capotondi, E. Pedersoli, M. Manfredda, F. Casolari, Maya Kiskinova, J. Fujii, P. Moras, T. Nakamura, T. Kato, T. Higashide, S. Iwata, S. Yamamoto, S. Shin, and I. Matsuda
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Journal Title
Rev. Sci. Instrum.
Volume: 86
Issue: 8
Pages: 083901-083901
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] 時間分解共鳴磁気光学効果/磁気円二色性測定によるAu/Fe/Au系の超高速消磁・緩和過程の追跡2017
Author(s)
山本真吾, 山本航平, 高橋良暢, 丸山航平, 鈴木雄太, 久保田雄也, 伊藤俊, 福田憲吾, 大島大輝, 大和田成起, 加藤剛志, 藤澤正美, 保原麗, C. Schussler-Langeheine, 平田靖透, 山本達, 小嗣真人, 岩田聡, 和達大樹, 矢橋牧名, 辛埴, 松田巌
Organizer
第30回日本放射光学会年会
Place of Presentation
神戸芸術センター(兵庫県・神戸市)
Related Report
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[Presentation] フェリ磁性体合金GdFeCoのM殻共鳴磁気光学スペクトルの研究2015
Author(s)
山本真吾, 田口宗孝, 久保田雄也, 伊藤俊, 染谷隆史, 藤澤正美, 保原麗, 中村哲也, 加藤剛志, 山本達, 辛埴, 松田巌
Organizer
日本物理学会 2015年 春季大会
Place of Presentation
早稲田大学(東京都新宿区)
Year and Date
2015-03-21 – 2015-03-24
Related Report
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[Presentation] シード型自由電子レーザーを用いたGdFeCoのM殻共鳴磁気光学効果による超高速磁化反転機構の研究2015
Author(s)
山本真吾, 田口宗孝, 染谷隆史, 久保田雄也, 伊藤俊, 和達大樹, 藤澤正美, F. Capotondi, E. Pedersoli, M. Manfredda, F. Casolari, M. Kiskinova, 藤井純, M. Paolo, 中村哲也, 加藤剛志, 岩田聡, 辛埴, 松田巌
Organizer
日本応用物理学会
Place of Presentation
東海大学(神奈川県平塚市)
Year and Date
2015-03-11 – 2015-03-14
Related Report
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[Presentation] シード型自由電子レーザー、放射光を用いたGdFeCoの時間分解M殻共鳴磁気光学効果の研究2015
Author(s)
山本真吾, 染谷隆史, 久保田雄也, 伊藤俊, 田口宗孝, 和達大樹, 藤澤正美, F. Capotondi, E. Pedersoli, M. Manfredda, F. Casolari, 保原麗, 中村哲也, 加藤剛志, 山本達, M. Kiskinova, 辛埴, 松田巌
Organizer
日本放射光学会
Place of Presentation
立命館大学(滋賀県草津市)
Year and Date
2015-01-10 – 2015-01-12
Related Report
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[Presentation] Femtomagnetism in a ferrimagnetic mealic alloy studied by time-resolved resonant magneto-optic Kerr effect measurement using a seeded free electron laser2014
Author(s)
Sh. Yamamoto, T. Someya, M. Taguchi, Y. Kubota, S. Ito, H. Wadati, M. Fujisawa, F. Capotondi, E. Pedersoli, M. Manfredda, F. Casolari, M. Kiskinova, J. Fujii, P. Moras, T. Nakamura, T. Kato, S. Shin, and I. Matsuda
Organizer
The 7th International Symposium on Surface Science
Place of Presentation
くにびきメッセ(島根県松江市)
Year and Date
2014-11-02 – 2014-11-06
Related Report
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[Presentation] シード型自由電子レーザーを用いたGdFeCo M_殻共鳴時間分解磁気光学研究の研究2014
Author(s)
山本真吾, 染谷隆史, 和達大樹, 藤澤正美, Flavio Capotondi, Emanuele Pedersoli, Michele Manfredda, Francesco Caslari, 保原麗, 中村哲也, 加藤剛志, 山本達, Maya Petrova Kiskinova, 辛埴, 松田巌
Organizer
日本物理学会 2014 秋季大会
Place of Presentation
中部大学(愛知県春日井市)
Year and Date
2014-09-07 – 2014-09-10
Related Report
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[Presentation] Development of measurement system for magneto-optical effect with a vacuum ultraviolet High Harmonic Generation laser2014
Author(s)
Sh. Yamamoto, T. Someya, J. Itatani, R. Hobara, M. Fujisawa, R. Yoshida, T. Yamamoto, T. Nakamura, M. Tsunoda, S. Yamamoto, S. Shin, and I. Matsuda
Organizer
The 1st Conference on Laser and Synchrotron Radiation Combination Experiment
Place of Presentation
パシフィコ横浜(神奈川県横浜市)
Year and Date
2014-04-23 – 2014-04-24
Related Report
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