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Manipulating light-wave-controlled charges into a spin-asymmetric flow: Petahertz frequency control of spins
- Manipulating light-wave-controlled charges into a spin-asymmetric flow: Petahertz frequency control of spins
- Kim, Young Jae; Lee, Jae Dong
- DGIST Authors
- Lee, Jae Dong
- Issue Date
- Physical Review B, 97(4)
- Article Type
- DEMAGNETIZATION; SEMICONDUCTOR; NANOSHEETS; CRSITE3
- Proposing a theoretical model of a layered ferromagnetic (FM) -nonmagnetic (NM) heterostructure under few-cycle optical driving, we render the light-wave-induced charge transport spin asymmetric and achieve petahertz frequency control of spins. Transition-metal trichalcogenides (TMTCs) are suggested for the FM layer. With the strong FM TMTCs (i.e., high-spin TM3+ therein), major and minor spins undergo cross transfer to the NM and FM layers, respectively, whereas with the weak FM TMTCs (i.e., low-spin TM3+), only major spins are transferred to the NM layer due to the Coulomb blockade for minor spins. These findings present prototypes of petahertz spin devices, broadening the horizon of spintronics up to the subfemtosecond time span. © 2018 American Physical Society.
- AMER PHYSICAL SOC
- Related Researcher
Light and Matter Theory Laboratory
Theoretical Condensed Matter Physics; Ultrafast Dynamics and Optics; Nonequilibrium Phenomena
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- Department of Emerging Materials ScienceLight and Matter Theory Laboratory1. Journal Articles
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