Numerical study of propagating surface plasmons in complex alloy thin films

B., Pravallika and Bhattacharya, Saswata and Dutta-Gupta, S (2022) Numerical study of propagating surface plasmons in complex alloy thin films. In: 2022 Workshop on Recent Advances in Photonics, WRAP 2022, 4 March 2022 through 6 March 2022, Mumbai.

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In this work, we numerically study the plasmonic response of heterogeneous two phase Ag0.45-Cu0.55 alloy thin films. This alloy undergoes spinodal decomposition and forms Ag-rich and Cu-rich phases in the microstructure. We combine phase-field modelling with FEM simulations to understand the optical response of the Ag0.45-Cu0.55 alloy thin films. We show that the far field response is insensitive to the microstructure unlike the nearfield which exhibits significant dependence on the morphology of phases in the microstructure. The inhomogeneous near fields on alloy thin films can have potential in enhancing the spin-orbit coupling of light. © 2022 IEEE.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Alloy plasmonics; Phase-field modeling; Plasmonics; Surface plasmons
Subjects: Others > Metallurgy Metallurgical Engineering
Materials Engineering > Materials engineering
Divisions: Department of Material Science Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 20 Jul 2022 08:56
Last Modified: 20 Jul 2022 08:56
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