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Title: Optical spin pumping induced pseudomagnetic field in two-dimensional heterostructures
Authors: Jiang, Chongyun
Abdullah Rasmita
Xu, Weigao
Imamoğlu, Atac
Xiong, Qihua
Gao, Wei-bo
Keywords: Science::Physics
Issue Date: 2018
Source: Jiang, C., Abdullah Rasmita, Xu, W., Imamoğlu, A., Xiong, Q., & Gao, W. (2018). Optical spin pumping induced pseudomagnetic field in two-dimensional heterostructures. Physical Review B, 98(24), 241410(R)-. doi:10.1103/PhysRevB.98.241410
Journal: Physical Review B
Abstract: Two-dimensional heterostructures are likely to provide new avenues for the manipulation of magnetization that is crucial for spintronics or magnetoelectronics. Here, we demonstrate that optical spin pumping can generate a large effective magnetic field in two-dimensional MoSe2/WSe2 heterostructures. We determine the strength of the generated field by polarization-resolved measurement of the interlayer exciton photoluminescence spectrum: the measured splitting exceeding 10 millielectron volts (meV) between the emission originating from the two valleys corresponds to an effective magnetic field of ∼30 T. The strength of this optically induced field can be controlled by the excitation light polarization. Our finding opens up possibilities for optically controlled spintronic devices based on van der Waals heterostructures.
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.98.241410
Schools: School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences 
Organisations: NOVITAS, Nanoelectronics Center of Excellence
MajuLab, CNRS-Université de Nice-NUS-NTU International Joint Research Unit
The Photonics Institute
Centre for Disruptive Photonic Technologies
Rights: © 2018 American Physical Society (APS). All rights reserved. This paper was published in Physical Review B and is made available with permission of American Physical Society (APS).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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