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Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide

Bismuth chalcogenides and lead telluride/selenide alloys exhibit exceptional thermoelectric properties that could be harnessed for power generation and device applications. Since phonons play a significant role in achieving these desired properties, quantifying the interaction between phonons and el...

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Autores principales: Zeljkovic, Ilija, Scipioni, Kane L., Walkup, Daniel, Okada, Yoshinori, Zhou, Wenwen, Sankar, R, Chang, Guoqing, Wang, Yung Jui, Lin, Hsin, Bansil, Arun, Chou, Fangcheng, Wang, Ziqiang, Madhavan, Vidya
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4389230/
https://www.ncbi.nlm.nih.gov/pubmed/25814140
http://dx.doi.org/10.1038/ncomms7559
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author Zeljkovic, Ilija
Scipioni, Kane L.
Walkup, Daniel
Okada, Yoshinori
Zhou, Wenwen
Sankar, R
Chang, Guoqing
Wang, Yung Jui
Lin, Hsin
Bansil, Arun
Chou, Fangcheng
Wang, Ziqiang
Madhavan, Vidya
author_facet Zeljkovic, Ilija
Scipioni, Kane L.
Walkup, Daniel
Okada, Yoshinori
Zhou, Wenwen
Sankar, R
Chang, Guoqing
Wang, Yung Jui
Lin, Hsin
Bansil, Arun
Chou, Fangcheng
Wang, Ziqiang
Madhavan, Vidya
author_sort Zeljkovic, Ilija
collection PubMed
description Bismuth chalcogenides and lead telluride/selenide alloys exhibit exceptional thermoelectric properties that could be harnessed for power generation and device applications. Since phonons play a significant role in achieving these desired properties, quantifying the interaction between phonons and electrons, which is encoded in the Eliashberg function of a material, is of immense importance. However, its precise extraction has in part been limited due to the lack of local experimental probes. Here we construct a method to directly extract the Eliashberg function using Landau level spectroscopy, and demonstrate its applicability to lightly doped thermoelectric bulk insulator PbSe. In addition to its high energy resolution only limited by thermal broadening, this novel experimental method could be used to detect variations in mass enhancement factor at the nanoscale level. This opens up a new pathway for investigating the local effects of doping and strain on the mass enhancement factor.
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spelling pubmed-43892302015-04-17 Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide Zeljkovic, Ilija Scipioni, Kane L. Walkup, Daniel Okada, Yoshinori Zhou, Wenwen Sankar, R Chang, Guoqing Wang, Yung Jui Lin, Hsin Bansil, Arun Chou, Fangcheng Wang, Ziqiang Madhavan, Vidya Nat Commun Article Bismuth chalcogenides and lead telluride/selenide alloys exhibit exceptional thermoelectric properties that could be harnessed for power generation and device applications. Since phonons play a significant role in achieving these desired properties, quantifying the interaction between phonons and electrons, which is encoded in the Eliashberg function of a material, is of immense importance. However, its precise extraction has in part been limited due to the lack of local experimental probes. Here we construct a method to directly extract the Eliashberg function using Landau level spectroscopy, and demonstrate its applicability to lightly doped thermoelectric bulk insulator PbSe. In addition to its high energy resolution only limited by thermal broadening, this novel experimental method could be used to detect variations in mass enhancement factor at the nanoscale level. This opens up a new pathway for investigating the local effects of doping and strain on the mass enhancement factor. Nature Pub. Group 2015-03-27 /pmc/articles/PMC4389230/ /pubmed/25814140 http://dx.doi.org/10.1038/ncomms7559 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-sa/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/
spellingShingle Article
Zeljkovic, Ilija
Scipioni, Kane L.
Walkup, Daniel
Okada, Yoshinori
Zhou, Wenwen
Sankar, R
Chang, Guoqing
Wang, Yung Jui
Lin, Hsin
Bansil, Arun
Chou, Fangcheng
Wang, Ziqiang
Madhavan, Vidya
Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide
title Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide
title_full Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide
title_fullStr Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide
title_full_unstemmed Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide
title_short Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide
title_sort nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4389230/
https://www.ncbi.nlm.nih.gov/pubmed/25814140
http://dx.doi.org/10.1038/ncomms7559
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