The neutron powder diffraction, specific heat, thermal conductivity, and Raman scattering measurements were presented to study the interplays of lattice, phonons and electrons of the Sr-doping Ba1-xSrxSnO3 (x was less than or equal to 0.1). Although Ba1-xSrxSnO3 kept the cubic lattice, the Raman spectra suggested a dynamic distortion at low temperature. The density functional theory was applied to analyze the electronic structures and phonon dispersions of Ba1-xSrxSnO3(x = 0, 0.0125), and the behaviors of electron bands around Fermi levels were discussed. According to the experimental and theoretical results, the Sr-doping played a significant role in tuning the indirect band gap of BaSnO3 and influenced the electron-phonon interaction.
@article{arxiv.2111.11180,
title = {Regulate the direct-indirect electronic band gap transition by electron-phonon interaction in BaSnO3},
author = {Binru Zhao and Qing Huang and Jiangtao Wu and Jinlong Jiao and Mingfang Shu and Gaoting Lin and Qiyang Sun and Ranran Zhang and Masato Hagihala and Shuki Torri and Guohua Wang and Qingyong Ren and Chen Li and Zhe Qu and Haidong Zhou and Jie Ma},
journal= {arXiv preprint arXiv:2111.11180},
year = {2022}
}
Comments
23 pages, 7 figures, 3 tables, no supplemental materials