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arXiv · 1905.01703

Quantum-statistical theory for laser-tuned transport and optical conductivities of dressed electrons in $α-\mc{T}_3$ materials

Andrii Iurov·Liubov Zhemchuzhna·Dipendra Dahal·Godfrey Gumbs·Danhong Huang
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Abstract

In the presence of external off-resonance and circularly-polarized irradiation, we have derived a many-body formalism and performed a detailed numerical analysis for both the conduction and optical currents in $α-\mc{T}_3$ lattices. The calculated complex many-body dielectric function, as well as conductivities of displacement and transport currents, display strong dependence on the lattice-structure parameter $α$, especially approaching the graphene limit with $α\to 0$. Unique features in dispersion and damping of plasmon modes are observed with different $α$ values, which are further accompanied by a reduced transport conductivity under irradiation. The discovery in this paper can be used for designing novel multi-functional nanoelectronic and nanoplasmonic devices.

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Andrii Iurov, Liubov Zhemchuzhna, Dipendra Dahal, Godfrey Gumbs, Danhong Huang. 2019-08-19. Quantum-statistical theory for laser-tuned transport and optical conductivities of dressed electrons in $α-\mc{T}_3$ materials. https://doi.org/10.1103/physrevb.101.035129

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