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

Abstract

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. Finally, this opens up a new pathway for investigating the local effects of doping and strain on the mass enhancement factor.

Authors:
 [1];  [1];  [1];  [2];  [1];  [3]; ORCiD logo [4];  [5];  [4];  [5];  [3];  [1];  [6]
  1. Boston College, Chestnut Hill, MA (United States). Dept. of Physics
  2. Boston College, Chestnut Hill, MA (United States). Dept. of Physics; Tohoku Univ., Sendai (Japan)
  3. National Taiwan Univ., Taipei (Taiwan)
  4. National University of Singapore
  5. Northeastern Univ., Boston, MA (United States)
  6. Boston College, Chestnut Hill, MA (United States). Dept. of Physics; Univ. of Illinois, Urbana, IL (United States)
Publication Date:
Research Org.:
Boston College, Chestnut Hill, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Singapore National Research Foundation
OSTI Identifier:
1441136
Grant/Contract Number:  
SC0002554; FG02-99ER45747; FG02-12ER46880; FG02-07ER46352; AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

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, and Madhavan, Vidya. Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide. United States: N. p., 2015. Web. doi:10.1038/ncomms7559.
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. United States. doi:10.1038/ncomms7559.
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, and Madhavan, Vidya. Fri . "Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide". United States. doi:10.1038/ncomms7559. https://www.osti.gov/servlets/purl/1441136.
@article{osti_1441136,
title = {Nanoscale determination of the mass enhancement factor in the lightly doped bulk insulator lead selenide},
author = {Zeljkovic, Ilija and Scipioni, Kane L. and Walkup, Daniel and Okada, Yoshinori and Zhou, Wenwen and Sankar, R. and Chang, Guoqing and Wang, Yung Jui and Lin, Hsin and Bansil, Arun and Chou, Fangcheng and Wang, Ziqiang and Madhavan, Vidya},
abstractNote = {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. Finally, this opens up a new pathway for investigating the local effects of doping and strain on the mass enhancement factor.},
doi = {10.1038/ncomms7559},
journal = {Nature Communications},
number = 1,
volume = 6,
place = {United States},
year = {Fri Mar 27 00:00:00 EDT 2015},
month = {Fri Mar 27 00:00:00 EDT 2015}
}

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Works referenced in this record:

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