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Macroscopic Magnetization Control by Symmetry Breaking of Photoinduced Spin Reorientation with Intense Terahertz Magnetic Near Field

Macroscopic Magnetization Control by Symmetry Breaking of Photoinduced Spin Reorientation with Intense Terahertz Magnetic Near Field

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KURIHARA, Takayuki, Hiroshi WATANABE, Makoto NAKAJIMA, Shutaro KARUBE, Kenichi OTO, YoshiChika OTANI, Tohru SUEMOTO, 2018. Macroscopic Magnetization Control by Symmetry Breaking of Photoinduced Spin Reorientation with Intense Terahertz Magnetic Near Field. In: Physical Review Letters. 120(10), 107202. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.120.107202

@article{Kurihara2018-03-09Macro-42237, title={Macroscopic Magnetization Control by Symmetry Breaking of Photoinduced Spin Reorientation with Intense Terahertz Magnetic Near Field}, year={2018}, doi={10.1103/PhysRevLett.120.107202}, number={10}, volume={120}, issn={0031-9007}, journal={Physical Review Letters}, author={Kurihara, Takayuki and Watanabe, Hiroshi and Nakajima, Makoto and Karube, Shutaro and Oto, Kenichi and Otani, YoshiChika and Suemoto, Tohru}, note={Article Number: 107202} }

2018-05-02T12:32:09Z 2018-03-09 We exploit an intense terahertz magnetic near field combined with femtosecond laser excitation to break the symmetry of photoinduced spin reorientation paths in ErFeO<sub>3</sub>. We succeed in aligning macroscopic magnetization reaching up to 80% of total magnetization in the sample to selectable orientations by adjusting the time delay between terahertz and optical pump pulses. The spin dynamics are well reproduced by equations of motion, including time-dependent magnetic potential. We show that the direction of the generated magnetization is determined by the transient direction of spin tilting and the magnetic field at the moment of photoexcitation. Oto, Kenichi Macroscopic Magnetization Control by Symmetry Breaking of Photoinduced Spin Reorientation with Intense Terahertz Magnetic Near Field Kurihara, Takayuki Suemoto, Tohru Nakajima, Makoto Watanabe, Hiroshi Suemoto, Tohru Watanabe, Hiroshi Otani, YoshiChika Nakajima, Makoto Oto, Kenichi 2018-05-02T12:32:09Z Karube, Shutaro eng Karube, Shutaro Kurihara, Takayuki Otani, YoshiChika

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