High sensitive spin spectroscopy using terahertz wave
| Project/Area Number |
25286063
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Optical engineering, Photon science
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| Research Institution | Osaka University (2014-2015)
Chiba University (2013) |
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Principal Investigator |
Nakajima Makoto 大阪大学, レーザーエネルギー学研究センタ, 准教授 (40361662)
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| Co-Investigator(Kenkyū-buntansha) |
OTO KEN-ICHI 千葉大学, 大学院理学研究科, 教授 (30263198)
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| Co-Investigator(Renkei-kenkyūsha) |
SUEMOTO TOHRU 東京大学, 物性研究所, 教授 (50134052)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
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| Keywords | テラヘルツ波 / スピントロニクス / スピンダイナミクス / 磁性体 / メタマテリアル / 近接場 / 非線形光学効果 / 磁性 / 超高速 / 半導体物性 |
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| Outline of Final Research Achievements |
We studied the spin dynamics and control of spin system in weak ferromagnetic materials using the magnetic field component of THz pulses. We developed the high intensity THz pulses with the high peak electric field up to 300 kV/cm. We succeeded in amplifying the amplitude of spin precession by fabricating the metal microstructure (split ring resonator) on sample surface. The enhancement factor is about one order. We succeeded in controlling the macroscopic magnetization direction by using coherent control technique of THz and optical pulse excitation in spin reorientation phase transition. Our results indicate that even the small-amplitude spin precession can induce macroscopic change of spin order by utilizing phase transition process, extending the potential of THz application to controlling magnetic domains within picoseconds time- and subwavelength spatial resolution.
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Report
(4 results)
Research Products
(94 results)
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[Journal Article] Dispersion, spatial growth rate, and start current of a Cherenkov free-electron laser with negative-index material2015
Author(s)
Y. Wang, Y. Wei, D. Li, K. Takano, M. Nakajima, X. Jiang, X. Tang, X. Shi, Y. Gong, J. Feng, and S. Miyamoto
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Journal Title
Phys. Plasma
Volume: 22
Issue: 8
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Mechanism of enhanced optical second-harmonic generation in the conducting pyrochlore-type Pb2Ir2O7-x2013
Author(s)
Y. Hirata, M. Nakajima, Y. Nomura, H.Tajima, Y. Matsushita, K. Asoh, Y. Kiuchi, A.G. Eguiluz, R. Arita, T. Suemoto, and K. Ohgushi
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Journal Title
Phys. Rev. Lett.
Volume: 110
Issue: 18
Pages: 187402-187402
DOI
Related Report
Peer Reviewed
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[Presentation] High efficiency Multimode Laser Diode THz TDS systems using Laser Chaos and Super focusing with Metal V-grooved Wave guide2015
Author(s)
F. Kuwashima, T. Shisao, T. Kishibata, Y. Akamine, K. Iwao, M. Ooi, M. Tani, K. Kurihara, K. Yamamoto, T. Nagashima, M. Nakajima, and M. Hangyo
Organizer
The Second International Symposium on Frontiers in THz Technology(FTT2015)
Place of Presentation
Hamamatsu,Japan
Year and Date
2015-09-01
Related Report
Int'l Joint Research
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[Presentation] High Effective Generation And Detection Of THz Waves Using A Laser Chaos And A Super-focusing With Metal V--grooved Waveguides2015
Author(s)
F. Kuwashima, T. Shirao, T. Kishibata, Y. Akamine, N. Iwao, M. Ooi, M. Tani, K. Kurihara, K. Yamamoto, T. Nagashima, M. Nakajima, and M. Hangyo
Organizer
IRMMW-THz2015
Place of Presentation
Hong Kong
Year and Date
2015-08-25
Related Report
Int'l Joint Research
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[Presentation] Terahertz response of randomly connected checkerboard patterns2014
Author(s)
K. Takano, Y. Tanaka, A. Chahadih, A. Ghaddar, X. Hang, F. Vaurette, T. Akalin, F. Miyamaru, M. Nakajima, and M. Hangyo
Organizer
4th Japan-Korea Metamaterial forum
Place of Presentation
Osaka, Japan
Year and Date
2014-12-22 – 2014-12-24
Related Report
Invited
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[Presentation] Terahertz radiation from gold nano-rod arrays2014
Author(s)
Motoki Asai, Hideaki Komiyama, Tomokazu Iyoda, Yuzuru Tadokoro, Keisuke Takano, Makoto Nakajima, and Masanori Hangyo
Organizer
4th Japan-Korea Metamaterial forum
Place of Presentation
Osaka, Japan
Year and Date
2014-12-22 – 2014-12-24
Related Report
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[Presentation] Interactive Magnetic Coupling Between Spin Precession And Split-ring Resonator In The Terahertz Frequency2014
Author(s)
Takayuki Kurihara, Keita Yamaguchi, Keita Nakamura, Yudai Sekine, Ken-ichi Oto, Yuumi Saito, Makoto Nakajima, Hiroshi Watanabe, Tohru Suemoto
Organizer
The 39th International Conference on Infrared, Millimeter and THz Waves (IRMMW-THz 2014)
Place of Presentation
Tucson, Arizona, USA
Year and Date
2014-09-14 – 2014-09-19
Related Report
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[Presentation] Inductive-to-Capacitive Transition of Terahertz Responses between a Metal Meah and a Metal Cross-shape Array by Introducing Random Cuts2014
Author(s)
K. Takano, Y. Okui, H. Kitahara, A. Chahadih, A. Ghaddar, X. Han, F. Vaurette, T. Akalin, Y Sekine, M. Nakajima, and M. Hangyo
Organizer
the 5th International Conference on Metamaterials, Photonic Crystals and Plasmonics
Place of Presentation
Nanyang Technological University (NTU), Singapore
Year and Date
2014-05-20 – 2014-05-23
Related Report
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