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arXiv · 1512.03283

Resonant plasmon-phonon coupling and its role in magneto-thermoelectricity in bismuth

P. Chudzinski
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Abstract

Using diagrammatic methods we derive an effective interaction between a low energy collective movement of fermionic liquid (acoustic plasmon) and acoustic phonon. We show that the coupling between the plasmon and the lattice has a very non-trivial, resonant structure. When real and imaginary parts of the acoustic plasmon's velocity are of the same order as the phonon's velocity, the resonance qualitatively changes the nature of phonon-drag. In the following we study how magneto-thermoelectric properties are affected. Our result suggests that the novel mechanism of energy transfer between electron liquid and crystal lattice can be behind the huge Nernst effect in bismuth.

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P. Chudzinski. 2015-12-10. Resonant plasmon-phonon coupling and its role in magneto-thermoelectricity in bismuth. https://doi.org/10.1140/epjb%2Fe2015-60674-3

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