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Article: Photogalvanic effect induced fully spin polarized current and pure spin current in zigzag SiC nanoribbons

TitlePhotogalvanic effect induced fully spin polarized current and pure spin current in zigzag SiC nanoribbons
Authors
Issue Date2018
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/pccp
Citation
Physical Chemistry Chemical Physics, 2018, v. 20 n. 41, p. 26744-26751 How to Cite?
AbstractUsing nonequilibrium Green's function combined with density functional theory, we investigate the spin-related current generated by the photogalvanic effect (PGE) in monolayer zigzag SiC nanoribbons (ZSiCNRs) by first-principles calculations. Due to its unique atomic structure and band structure properties, we find that 100% spin polarized photocurrent can be easily obtained in a wide range of photon energies by shining linearly/circularly polarized light when ZSiCNRs are in the anti-ferromagnetic (AFM) state. In comparison, when the ZSiCNRs are in the ferromagnetic (FM) state, the spin polarization of photocurrent can vary from 0% to 100% by changing the photon energy or polarization angle. More interestingly, pure spin current can also be generated by changing the circular polarization angle in the FM state. Thus, by properly tuning the photon energy, one can obtain 100% spin polarized current regardless of its magnetic configuration and pure spin current in its FM state. Our numerical findings pave a feasible way for ZSiCNRs' novel applications in spintronics.
Persistent Identifierhttp://hdl.handle.net/10722/265957
ISSN
2017 Impact Factor: 3.906
2015 SCImago Journal Rankings: 1.836
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, J-
dc.contributor.authorZhang, LW-
dc.contributor.authorZhang, L-
dc.contributor.authorZheng, XH-
dc.contributor.authorXiao, LT-
dc.contributor.authorJia, ST-
dc.contributor.authorWang, J-
dc.date.accessioned2018-12-17T02:16:22Z-
dc.date.available2018-12-17T02:16:22Z-
dc.date.issued2018-
dc.identifier.citationPhysical Chemistry Chemical Physics, 2018, v. 20 n. 41, p. 26744-26751-
dc.identifier.issn1463-9076-
dc.identifier.urihttp://hdl.handle.net/10722/265957-
dc.description.abstractUsing nonequilibrium Green's function combined with density functional theory, we investigate the spin-related current generated by the photogalvanic effect (PGE) in monolayer zigzag SiC nanoribbons (ZSiCNRs) by first-principles calculations. Due to its unique atomic structure and band structure properties, we find that 100% spin polarized photocurrent can be easily obtained in a wide range of photon energies by shining linearly/circularly polarized light when ZSiCNRs are in the anti-ferromagnetic (AFM) state. In comparison, when the ZSiCNRs are in the ferromagnetic (FM) state, the spin polarization of photocurrent can vary from 0% to 100% by changing the photon energy or polarization angle. More interestingly, pure spin current can also be generated by changing the circular polarization angle in the FM state. Thus, by properly tuning the photon energy, one can obtain 100% spin polarized current regardless of its magnetic configuration and pure spin current in its FM state. Our numerical findings pave a feasible way for ZSiCNRs' novel applications in spintronics.-
dc.languageeng-
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/pccp-
dc.relation.ispartofPhysical Chemistry Chemical Physics-
dc.titlePhotogalvanic effect induced fully spin polarized current and pure spin current in zigzag SiC nanoribbons-
dc.typeArticle-
dc.identifier.emailWang, J: jianwang@hku.hk-
dc.identifier.authorityWang, J=rp00799-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1039/c8cp05046e-
dc.identifier.pmid30324951-
dc.identifier.scopuseid_2-s2.0-85055601654-
dc.identifier.hkuros296234-
dc.identifier.volume20-
dc.identifier.issue41-
dc.identifier.spage26744-
dc.identifier.epage26751-
dc.identifier.isiWOS:000448665900071-
dc.publisher.placeUnited Kingdom-

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