Enhanced linear dichroism of flattened-edge black phosphorus nanoribbons

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dc.contributor.authorSeixas L.
dc.date.accessioned2024-03-12T19:14:54Z
dc.date.available2024-03-12T19:14:54Z
dc.date.issued2022
dc.description.abstract© 2022 IOP Publishing Ltd.Black phosphorus is a material with an intrinsic anisotropy in electronic and optical properties due to its puckered honeycomb lattice. Optical absorption is different for incident light with linear polarization in the armchair and zigzag directions (linear dichroism). These directions are also used in the cuts of materials to create black phosphorus nanoribbons. Edges of nanoribbons usually have small reconstruction effects, with minor electronic effects. Here, we show a reconstruction of the armchair edge that introduces a new valence band, which flattens the puckered lattice and increases the linear dichroism extrinsically in the visible spectrum. This enhancement in linear dichroism is explained by the polarization selection rule, which considers the parity of the wave function to a reflection plane. The flattened-edge reconstruction originates from the inversion of chirality of the P atoms at the edges and significantly alters the entire optical absorption of the material. The flattened edges have potential applications in pseudospintronics, photodetectors and might provide new functionalities in optoelectronic and photonic devices.
dc.description.issuenumber22
dc.description.volume34
dc.identifier.doi10.1088/1361-648X/ac5d18
dc.identifier.issn0953-8984
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34359
dc.relation.ispartofJournal of Physics Condensed Matter
dc.rightsAcesso Restrito
dc.subject.otherlanguage2D material
dc.subject.otherlanguageblack phosphorus
dc.subject.otherlanguageedge states
dc.subject.otherlanguagelinear dichroism
dc.subject.otherlanguageoptical absorption
dc.titleEnhanced linear dichroism of flattened-edge black phosphorus nanoribbons
dc.typeArtigo
local.scopus.citations1
local.scopus.eid2-s2.0-85128159878
local.scopus.subject2d material
local.scopus.subjectEdge state
local.scopus.subjectElectronic and optical properties
local.scopus.subjectHoneycomb lattices
local.scopus.subjectIncident light
local.scopus.subjectIntrinsic anisotropy
local.scopus.subjectLinear dichroism
local.scopus.subjectLinear polarization
local.scopus.subjectOptical absorption
local.scopus.subjectOptical-
local.scopus.updated2024-12-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85128159878&origin=inward
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