We demonstrate tuning of a two-dimensional (2D) plasmon spectrum in modulation-doped AlAs quantum wells via the application of in-plane uniaxial strain. We show that the dramatic change in the plasma spectrum is caused by strain-induced redistribution of charge carriers between anisotropic Xx and Xy valleys. The discovered piezoplasmonic effect provides a tool to study the band structure of 2D systems. We use the piezoplasmonic effect to measure how the inter-valley energy splitting depends on the deformation. This dependency yields the AlAs deformation potential of eV.
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Research Article| September 01 2020
Piezoplasmonics: Strain-induced tunability of plasmon resonance in AlAs quantum wells
A. R. Khisameeva;
V. M. Muravev ;
A. R. Khisameeva, V. M. Muravev, I. V. Kukushkin; Piezoplasmonics: Strain-induced tunability of plasmon resonance in AlAs quantum wells. Appl. Phys. Lett. 31 August 2020; 117 (9): 093102. https://doi.org/10.1063/5.0012496
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