Temperature-dependent band gaps in several semiconductors: from the role of electron-phonon renormalization

• Published in: Journal of physics. Condensed matter Vol. 32; no. 47; pp. 475503 - 475510
• Main Authors: Zhang, Yiming, Wang, Ziyu, Xi, Jinyang, Yang, Jiong
• Format: Journal Article
• Language: English
• Published: England IOP Publishing 11.11.2020
• Subjects: electron-phonon renormalization; lattice expansion; phonon vibration; temperature-dependent band gap; lattice expansion; temperature-dependent band gap; phonon vibration; electron–phonon renormalization
• ISSN: 0953-8984; 1361-648X; 1361-648X
• DOI: 10.1088/1361-648X/aba45d

Temperature dependence of band gap is one of the most fundamental properties for semiconductors, and has strong influences on many applications. The renormalization of the band gap at finite temperatures is due to the lattice expansion and the phonon-induced atomic vibrations. In this work, we apply...