Calculation of the nonlinear response functions of intraexciton transitions in two-dimensional transition metal dichalcogenides

J. C.G. Henriques; Høgni C. Kamban; Thomas G. Pedersen; N. M.R. Peres

doi:10.1103/PhysRevB.103.235412

Calculation of the nonlinear response functions of intraexciton transitions in two-dimensional transition metal dichalcogenides

J. C.G. Henriques, Høgni C. Kamban, Thomas G. Pedersen, N. M.R. Peres

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

In this paper we study the third-order nonlinear optical response due to transitions between excitonic levels in two-dimensional transition metal dichalcogenides. To accomplish this we use methods not applied to the description of excitons in two-dimensional materials so far and combined with a variational approach to describe the 1s excitonic state. The aforementioned transitions allow us to probe dark states which are not revealed in absorption experiments. We present general formulas capable of describing any third-order process. The specific case of two-photon absorption in WSe2 is studied. The case of the circular well is also studied as a benchmark of the theory.

Original language	English
Article number	235412
Journal	Physical Review B
Volume	103
Issue number	23
ISSN	2469-9950
DOIs	https://doi.org/10.1103/PhysRevB.103.235412
Publication status	Published - 15 Jun 2021

Bibliographical note

Funding Information:
N.M.R.P. acknowledges support by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UIDB/04650/2020. J.C.G.H. acknowledges the Center of Physics for a grant funded by the UIDB/04650/2020 strategic project and POCI-01-0145-FEDER-028887. N.M.R.P. acknowledges support from the European Commission through the project “Graphene-Driven Revolutions in ICT and Beyond” (Ref. No. 881603, CORE 3), COMPETE 2020, PORTUGAL 2020, FEDER, and the FCT through projects POCI-01-0145-FEDER-028114, PTDC/NAN-OPT/29265/2017. H.C.K. and T.G.P. gratefully acknowledge financial support by the Center for Nanostructured Graphene (CNG), which is sponsored by the Danish National Research Foundation, Project No. DNRF103.

Publisher Copyright:
© 2021 American Physical Society.

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https://arxiv.org/pdf/2103.03322.pdf

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@article{5c586519219e4cbfa590a49037597185,

title = "Calculation of the nonlinear response functions of intraexciton transitions in two-dimensional transition metal dichalcogenides",

abstract = "In this paper we study the third-order nonlinear optical response due to transitions between excitonic levels in two-dimensional transition metal dichalcogenides. To accomplish this we use methods not applied to the description of excitons in two-dimensional materials so far and combined with a variational approach to describe the 1s excitonic state. The aforementioned transitions allow us to probe dark states which are not revealed in absorption experiments. We present general formulas capable of describing any third-order process. The specific case of two-photon absorption in WSe2 is studied. The case of the circular well is also studied as a benchmark of the theory.",

author = "Henriques, {J. C.G.} and Kamban, {H{\o}gni C.} and Pedersen, {Thomas G.} and Peres, {N. M.R.}",

note = "Funding Information: N.M.R.P. acknowledges support by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UIDB/04650/2020. J.C.G.H. acknowledges the Center of Physics for a grant funded by the UIDB/04650/2020 strategic project and POCI-01-0145-FEDER-028887. N.M.R.P. acknowledges support from the European Commission through the project “Graphene-Driven Revolutions in ICT and Beyond” (Ref. No. 881603, CORE 3), COMPETE 2020, PORTUGAL 2020, FEDER, and the FCT through projects POCI-01-0145-FEDER-028114, PTDC/NAN-OPT/29265/2017. H.C.K. and T.G.P. gratefully acknowledge financial support by the Center for Nanostructured Graphene (CNG), which is sponsored by the Danish National Research Foundation, Project No. DNRF103. Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

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N2 - In this paper we study the third-order nonlinear optical response due to transitions between excitonic levels in two-dimensional transition metal dichalcogenides. To accomplish this we use methods not applied to the description of excitons in two-dimensional materials so far and combined with a variational approach to describe the 1s excitonic state. The aforementioned transitions allow us to probe dark states which are not revealed in absorption experiments. We present general formulas capable of describing any third-order process. The specific case of two-photon absorption in WSe2 is studied. The case of the circular well is also studied as a benchmark of the theory.

AB - In this paper we study the third-order nonlinear optical response due to transitions between excitonic levels in two-dimensional transition metal dichalcogenides. To accomplish this we use methods not applied to the description of excitons in two-dimensional materials so far and combined with a variational approach to describe the 1s excitonic state. The aforementioned transitions allow us to probe dark states which are not revealed in absorption experiments. We present general formulas capable of describing any third-order process. The specific case of two-photon absorption in WSe2 is studied. The case of the circular well is also studied as a benchmark of the theory.

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Calculation of the nonlinear response functions of intraexciton transitions in two-dimensional transition metal dichalcogenides

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