Electron-phonon coupling in copper intercalated Bi$_{2}$Se$_{3}$

Maciej Wiesner; Kristie Koski; Antti Laitinen; Juuso Manninen; Alexander A. Zyuzin; Pertti Hakonen

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arXiv · 2202.12320

Electron-phonon coupling in copper intercalated Bi$_{2}$Se$_{3}$

Maciej Wiesner·Kristie Koski·Antti Laitinen·Juuso Manninen·Alexander A. Zyuzin·Pertti Hakonen

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Abstract

We report charge and heat transport studies in copper-intercalated topological insulator Bi$_2$Se$_3$ hybrid devices. Measured conductivity shows impact of quantum corrections, electron-electron and electron-phonon interactions. Our shot noise measurements reveal that heat flux displays a crossover between $T^2$ and $T^4$ with the increase of temperature. The results can be explained by a model of inelastic electron scattering on disorder, increasing the role of transverse acoustic phonons in the electron-phonon coupling process.

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Maciej Wiesner, Kristie Koski, Antti Laitinen, Juuso Manninen, Alexander A. Zyuzin, Pertti Hakonen. 2022-02-24. Electron-phonon coupling in copper intercalated Bi$_{2}$Se$_{3}$. https://arxiv.org/abs/2202.12320

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