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arXiv · 2011.09139

Piezoplasmonics: strain-induced tunability of plasmon resonance in AlAs quantum wells

A. R. Khisameeva·V. M. Muravev·I. V. Kukushkin
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Abstract

We demonstrate tuning of two-dimensional (2D) plasmon spectrum in modulation-doped AlAs quantum wells via the application of in-plane uniaxial strain. We show that dramatic change in the plasma spectrum is caused by strain-induced redistribution of charge carriers between anisotropic $X_x$ and $X_y$ valleys. Discovered piezoplasmonic effect provides a tool to study the band structure of 2D systems. We use piezoplasmonic effect to measure how the inter-valley energy splitting depends on the deformation. This dependency yields the AlAs deformation potential of $E_2 = (5.6 \pm 0.3)$~eV.

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A. R. Khisameeva, V. M. Muravev, I. V. Kukushkin. 2020-11-18. Piezoplasmonics: strain-induced tunability of plasmon resonance in AlAs quantum wells. https://doi.org/10.1063/5.0012496

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