Electron–phonon coupling in copper intercalated Bi 2 Se 3

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

doi:10.1038/s41598-022-15909-w

Electron–phonon coupling in copper intercalated Bi ₂ Se ₃

Maciej Wiesner, Kristie Koski, Antti Laitinen, Juuso Manninen, Alexander A. Zyuzin, Pertti Hakonen^*

^*Corresponding author for this work

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Abstract

We report charge and heat transport studies in copper-intercalated topological insulator Bi₂Se₃ 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 T² and T⁴ with the increase of temperature. The results might be explained by a model of inelastic electron scattering on disorder, increasing the role of transverse acoustic phonons in the electron–phonon coupling process.

Original language	English
Article number	12097
Pages (from-to)	1-8
Number of pages	8
Journal	Scientific Reports
Volume	12
Issue number	1
DOIs	https://doi.org/10.1038/s41598-022-15909-w
Publication status	Published - 15 Jul 2022
MoE publication type	A1 Journal article-refereed

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Electron–phonon coupling in copper intercalated Bi2Se3Final published version, 2 MBLicence: CC BY

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title = "Electron–phonon coupling in copper intercalated Bi 2 Se 3",

abstract = "We report charge and heat transport studies in copper-intercalated topological insulator Bi2Se3 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 T2 and T4 with the increase of temperature. The results might be explained by a model of inelastic electron scattering on disorder, increasing the role of transverse acoustic phonons in the electron–phonon coupling process.",

author = "Maciej Wiesner and Kristie Koski and Antti Laitinen and Juuso Manninen and Zyuzin, {Alexander A.} and Pertti Hakonen",

note = "| openaire: EC/H2020/824109/EU//EMP Funding Information: This work was supported by Aalto University AScI Grant and the Academy of Finland projects 310086 (LTnoise) and 336813 (CoE Quantum Technology Finland). The research leading to these results has received funding from the European Union{\textquoteright}s Horizon 2020 Research and Innovation Programme, under Grant Agreement No. 824109. The work was partially sponsored by Polish National Centre of Science (NCN) grant 2015/17/B/ST3/02391. The work of AZ was supported by the Academy of Finland Grant No. 308339. AZ is grateful to the hospitality of the Pirinem School of Theoretical Physics. Funding Information: This work was supported by Aalto University AScI Grant and the Academy of Finland projects 310086 (LTnoise) and 336813 (CoE Quantum Technology Finland). The research leading to these results has received funding from the European Union{\textquoteright}s Horizon 2020 Research and Innovation Programme, under Grant Agreement No. 824109. The work was partially sponsored by Polish National Centre of Science (NCN) grant 2015/17/B/ST3/02391. The work of AZ was supported by the Academy of Finland Grant No. 308339. AZ is grateful to the hospitality of the Pirinem School of Theoretical Physics. Publisher Copyright: {\textcopyright} 2022, The Author(s).",

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doi = "10.1038/s41598-022-15909-w",

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AU - Wiesner, Maciej

AU - Koski, Kristie

AU - Laitinen, Antti

AU - Manninen, Juuso

AU - Zyuzin, Alexander A.

AU - Hakonen, Pertti

N1 - | openaire: EC/H2020/824109/EU//EMP Funding Information: This work was supported by Aalto University AScI Grant and the Academy of Finland projects 310086 (LTnoise) and 336813 (CoE Quantum Technology Finland). The research leading to these results has received funding from the European Union’s Horizon 2020 Research and Innovation Programme, under Grant Agreement No. 824109. The work was partially sponsored by Polish National Centre of Science (NCN) grant 2015/17/B/ST3/02391. The work of AZ was supported by the Academy of Finland Grant No. 308339. AZ is grateful to the hospitality of the Pirinem School of Theoretical Physics. Funding Information: This work was supported by Aalto University AScI Grant and the Academy of Finland projects 310086 (LTnoise) and 336813 (CoE Quantum Technology Finland). The research leading to these results has received funding from the European Union’s Horizon 2020 Research and Innovation Programme, under Grant Agreement No. 824109. The work was partially sponsored by Polish National Centre of Science (NCN) grant 2015/17/B/ST3/02391. The work of AZ was supported by the Academy of Finland Grant No. 308339. AZ is grateful to the hospitality of the Pirinem School of Theoretical Physics. Publisher Copyright: © 2022, The Author(s).

PY - 2022/7/15

Y1 - 2022/7/15

N2 - We report charge and heat transport studies in copper-intercalated topological insulator Bi2Se3 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 T2 and T4 with the increase of temperature. The results might be explained by a model of inelastic electron scattering on disorder, increasing the role of transverse acoustic phonons in the electron–phonon coupling process.

AB - We report charge and heat transport studies in copper-intercalated topological insulator Bi2Se3 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 T2 and T4 with the increase of temperature. The results might 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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Electron–phonon coupling in copper intercalated Bi ₂ Se ₃

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-: European Microkelvin Platform

Theory of Weyl semimetals and superconductors

1/f noise

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Electron–phonon coupling in copper intercalated Bi 2 Se 3

Abstract

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Projects

-: European Microkelvin Platform

Theory of Weyl semimetals and superconductors

1/f noise

Cite this

Electron–phonon coupling in copper intercalated Bi ₂ Se ₃