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Title: Spin control in reduced-dimensional chiral perovskites
Authors: Long, Guankui
Jiang, Chongyun
Sabatini, Randy
Yang, Zhenyu
Wei, Mingyang
Quan, Li Na
Liang, Qiuming
Abdullah Rasmita
Askerka, Mikhail
Walters, Grant
Gong, Xiwen
Xing, Jun
Wen, Xinglin
Quintero-Bermudez, Rafael
Yuan, Haifeng
Xing, Guichuan
Wang, Renshaw Xiao
Song, Datong
Voznyy, Oleksandr
Zhang, Mingtao
Hoogland, Sjoerd
Gao, Weibo
Xiong, Qihua
Sargent, Edward H.
Keywords: Science::Physics
Issue Date: 2018
Source: Long, G., Jiang, C., Sabatini, R., Yang, Z., Wei, M., Quan, L. N., . . . Sargent, E. H. (2018). Spin control in reduced-dimensional chiral perovskites. Nature Photonics, 12(9), 528-533. doi:10.1038/s41566-018-0220-6
Journal: Nature Photonics
Abstract: Hybrid organic–inorganic perovskites exhibit strong spin–orbit coupling1, spin-dependent optical selection rules2,3 and large Rashba splitting4–8. These characteristics make them promising candidates for spintronic devices9 with photonic interfaces. Here we report that spin polarization in perovskites can be controlled through chemical design as well as by a magnetic field. We obtain both spin-polarized photon absorption and spin-polarized photoluminescence in reduced-dimensional chiral perovskites through combined strategies of chirality transfer and energy funnelling. A 3% spin-polarized photoluminescence is observed even in the absence of an applied external magnetic field owing to the different emission rates of σ+ and σ− polarized photoluminescence. Three-dimensional perovskites achieve a comparable degree of photoluminescence polarization only under an external magnetic field of 5 T. Our findings pave the way for chiral perovskites as powerful spintronic materials.
ISSN: 1749-4885
DOI: 10.1038/s41566-018-0220-6
Schools: School of Physical and Mathematical Sciences 
Organisations: The Photonics Institute
Centre for Disruptive Photonic Technologies
CNRS–Université de Nice–NUS–NTU International Joint Research Unit
Rights: © 2018 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. This paper was published in Nature Photonics and is made available with permission of Macmillan Publishers Limited, part of Springer Nature.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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