Second harmonic generation in<em> h</em>-BN and MoS<sub>2</sub> monolayers: Role of electron-hole interaction
Data(s) |
15/02/2014
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Resumo |
We study second-harmonic generation in h-BN and MoS$_2$ monolayers using a novel \emph{ab initio} approach based on Many-body theory. We show that electron-hole interaction doubles the signal intensity at the excitonic resonances with respect to the contribution from independent electronic transitions. This implies that electron-hole interaction is essential to describe second-harmonic generation in those materials. We argue that this finding is general for nonlinear optical properties in nanostructures and that the present methodology is the key to disclose these effects. |
Formato |
application/pdf |
Identificador | |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/openAccess |
Fonte |
Grüning , M & Attaccalite , C 2014 , ' Second harmonic generation in h -BN and MoS 2 monolayers: Role of electron-hole interaction ' Physical Review B (Condensed Matter) , vol 89 , no. 9 , 081102 . DOI: 10.1103/PhysRevB.89.081102 |
Tipo |
article |