2012 Fiscal Year Final Research Report
Observation of ultrafast spin dynamics using by half-cycled THz pulses
| Project/Area Number |
23686012
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Chiba University (2012)
The University of Tokyo (2011) |
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Principal Investigator |
NAKAJIMA Makoto 千葉大学, 大学院・理学研究科, 准教授 (40361662)
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| Project Period (FY) |
2011 – 2012
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| Keywords | テラヘルツ波 / 超高速 / フェムト秒パルスレーザー / 磁性体 / スピンダイナミクス / 磁気光学 |
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| Research Abstract |
We studied the spin dynamics in ferromagnetic materials usingTHz time domain spectroscopy. We developed high intensity THz pulses using two-colorexcitation technique in air-plasma. The ultrafast response of the spin precession motionsin ErFeO were studied using the THz pulses. The observation of the spin reorientationtransition is succeeded using this technique, which enables us to clarify the spin statesin the ultrashort time scale.
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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
Physical Review Letters
Volume: 110
Pages: 187402
DOI
Peer Reviewed
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[Journal Article] Hard magnetic ferrite with a gigantic coercivity and high frequency millimetre wave rotation2012
Author(s)
A. Namai,M. Yoshikiyo,K. Yamada,S. Sakurai,T. Goto,T. Yoshida,T. Miyazaki, M. Nakajima, T. Suemoto,H. Tokoro, and S. Ohkoshi
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Journal Title
Nature Communications
Volume: 3
Pages: 1035
DOI
Peer Reviewed
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[Journal Article] Intense terahertz emission from undoped GaAs/n-type GaAs and InAs/AlSb structures grown on Si substrates in the transmission-geometry excitation2011
Author(s)
Elmer Estacio, Satoru Takatori, Minh Hong Pham, Takashi Yoshioka, Tomoharu Nakazato, Marilou Cadatal-Raduban, Toshihiko Shimizu, Nobuhiko Sarukura, Masanori Hangyo, Christopher T. Que, Masahiko Tani, Tadataka Edamura, Makoto Nakajima,John Vincent Misa, Rafael Jaculbia, Armando Somintac, and Arnel Salvador
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Journal Title
Applied Physics B
Volume: 103
Pages: 825-829
DOI
Peer Reviewed
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