Investigation of the nonlinear optical frequency conversion in ultrathin franckeite heterostructures

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dc.contributor.authorCadore A.R.
dc.contributor.authorOre A.S.M.V.
dc.contributor.authorSteinberg D.
dc.contributor.authorZapata J.D.
dc.contributor.authorde Souza E.A.T.
dc.contributor.authorBahamon D.A.
dc.contributor.authorde Matos C.J.S.
dc.date.accessioned2024-05-01T06:12:16Z
dc.date.available2024-05-01T06:12:16Z
dc.date.issued2024
dc.description.abstract© 2024 Author(s).Layered franckeite is a natural superlattice composed of two alternating layers of different compositions, SnS 2 - and PbS-like. This creates incommensurability between the two species along the planes of the layers, resulting in spontaneous symmetry-break periodic ripples in the a-axis orientation. Nevertheless, natural franckeite heterostructure has shown potential for optoelectronic applications mostly because it is a semiconductor with 0.7 eV bandgap, air-stable, and can be easily exfoliated down to ultrathin thicknesses. Here, we demonstrate that few-layer franckeite shows a highly anisotropic nonlinear optical response due to its lattice structure, which allows for the identification of the ripple axis. Moreover, we find that the highly anisotropic third-harmonic emission strongly varies with material thickness. These features are further corroborated by a theoretical nonlinear susceptibility model and the nonlinear transfer matrix method. Overall, our findings help to understand this material and propose a characterization method that could be used in other layered materials and heterostructures to assign their characteristic axes.
dc.description.issuenumber8
dc.description.volume135
dc.identifier.doi10.1063/5.0186615
dc.identifier.issnNone
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/38584
dc.relation.ispartofJournal of Applied Physics
dc.rightsAcesso Aberto
dc.titleInvestigation of the nonlinear optical frequency conversion in ultrathin franckeite heterostructures
dc.typeArtigo
local.scopus.citations2
local.scopus.eid2-s2.0-85186417280
local.scopus.subjectA: semiconductors
local.scopus.subjectAir stable
local.scopus.subjectAlternating layers
local.scopus.subjectAxis orientation
local.scopus.subjectNatural superlattices
local.scopus.subjectNonlinear-optical frequency conversion
local.scopus.subjectOptoelectronic applications
local.scopus.subjectPeriodic ripples
local.scopus.subjectSpontaneous symmetry
local.scopus.subjectUltra-thin
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85186417280&origin=inward
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