Academic Journal
Dual-field manipulation of terahertz polarization in programmable ferroelectric-based spintronic emitter.
| Τίτλος: | Dual-field manipulation of terahertz polarization in programmable ferroelectric-based spintronic emitter. |
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| Συγγραφείς: | Tao, Yaxin1,2,3, Liu, Changqin1,2,3 changqinliu@nudt.edu.cn, Wang, Kaikai1,2,3, Yuan, Xiaojuan1,2,3, Yang, Dongsheng1,2,3, Hu, Jingyi1,2,3, Chen, Jiahao1,2,3, Zhou, Chao4, Yu, Xiaoxiang1,2,3, Kang, Dongdong1,2,3, Dai, Jiayu1,2,3 changqinliu@nudt.edu.cn |
| Πηγή: | Applied Physics Letters. 8/31/2026, Vol. 129 Issue 9, p1-6. 6p. |
| Θεματικοί όροι: | *Platinum, *Bilayers (Solid state physics), *Terahertz technology, *Magnetic fields, *Electric fields |
| Περίληψη: | Electric-field control of spintronic terahertz (THz) emitters offers an attractive route toward compact and integrated THz devices. However, the quantitative relation between electric field and magnetic field orientation in dual manipulation of THz polarization remains unclear. Here, we investigate THz emission from Pt/Ni bilayers on ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3 substrate. Rotated magnetic-field-dependent THz emission measurements, combined with a Stoner–Wohlfarth macrospin analysis, quantitatively determine the voltage-dependent anisotropy fields and their orientations. By experimentally comparing the vectorial THz response at representative magnetic-field orientations, we achieve an appreciable electric-field control of THz polarization rotation of up to 78° at a magnetic field angle of θH = 90°. Utilizing this polarization manipulation at the optimized magnetic field angle, we propose an electrically encoded THz far-field imaging scheme via delayed two-pulse excitation. These results provide a new approach for electrically designing structured THz emission. [ABSTRACT FROM AUTHOR] |
| Βάση Δεδομένων: | Academic Search Index |
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