Powerful and Tunable THz Emitters Based on the Fe/Pt Magnetic Heterostructure

Powerful and Tunable THz Emitters Based on the Fe/Pt Magnetic Heterostructure

Heterostructures composed of ferromagnetic metal and nonmagnetic metal with strong spin‐orbit coupling are shown to be powerful broadband THz emitters, whose field strength can be maximized by optimizing the thickness of both ferromagnetic and nonmagnetic films, and the heterostructure layers. Furth...

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Veröffentlicht in:Advanced optical materials 2016-12, Vol.4 (12), p.1944-1949
Hauptverfasser: Yang, Dewang, Liang, Jianhui, Zhou, Chao, Sun, Lu, Zheng, Ronger, Luo, Shengnian, Wu, Yizheng, Qi, Jingbo
Format: Artikel
Sprache:eng
Schlagworte:
Broadband
Electrons
Emissions
Emitters
femtosecond laser pulses
Ferromagnetic materials
Field strength
Heterostructures
inverse spin Hall effect
Magnetic fields
magnetic heterostructures
Optics
Optimization
Platinum
THz wave emission
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Zusammenfassung:Heterostructures composed of ferromagnetic metal and nonmagnetic metal with strong spin‐orbit coupling are shown to be powerful broadband THz emitters, whose field strength can be maximized by optimizing the thickness of both ferromagnetic and nonmagnetic films, and the heterostructure layers. Furthermore, the THz spectrum and its intensity are tunable by the magnetic field orientation applied on the patterned magnetic Fe/Pt heterostructures.
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.201600270