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Manipulating light-wave-controlled charges into a spin-asymmetric flow: Petahertz frequency control of spins

Title
Manipulating light-wave-controlled charges into a spin-asymmetric flow: Petahertz frequency control of spins
Authors
Kim, Young JaeLee, Jae Dong
DGIST Authors
Lee, Jae Dong
Issue Date
2018-01
Citation
Physical Review B, 97(4)
Type
Article
Article Type
Article
Keywords
DEMAGNETIZATIONSEMICONDUCTORNANOSHEETSCRSITE3
ISSN
2469-9950
Abstract
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.
URI
http://hdl.handle.net/20.500.11750/5596
DOI
10.1103/PhysRevB.97.041105
Publisher
AMER PHYSICAL SOC
Related Researcher
  • Author Lee, Jae Dong Light and Matter Theory Laboratory
  • Research Interests Theoretical Condensed Matter Physics; Ultrafast Dynamics and Optics; Nonequilibrium Phenomena
Files:
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Collection:
Department of Emerging Materials ScienceLight and Matter Theory Laboratory1. Journal Articles


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