@article{fce9a46569354d54af2ebacc55a185d7,
title = "Unusual temperature evolution of the band structure of Bi(111) studied by angle-resolved photoemission spectroscopy and density functional theory",
abstract = "We have performed angle-resolved photoemission spectroscopy of Bi(111) thin films grown on Si(111), and investigated the evolution of band structure with temperature. We revealed an unexpectedly large temperature variation of the energy dispersion for the Rashba-split surface state and the quantum-well states, as seen in the highly momentum-dependent energy shift as large as 0.1 eV. A comparison of the band dispersion between experiment and first-principles band-structure calculations suggests that the interlayer spacing at the topmost Bi bilayer expands upon temperature increase. The present study provides a pathway for investigating the interplay between lattice and electronic states through the temperature dependence of band structure.",
author = "Takafumi Sato and Keiko Yamada and Takao Kosaka and Seigo Souma and Kunihiko Yamauchi and Katsuaki Sugawara and Tamio Oguchi and Takashi Takahashi",
note = "Funding Information: This work was supported by Grant-in-Aid for Scientific Research on Innovative Areas “Topological Materials Science” (JSPS KAKENHI Grants No. JP15H05853 and No. JP18H04227), JST-CREST (Grant No. JPMJCR18T1), Grant-in-Aid for Scientific Research (JSPS KAKENHI Grants No. JP17H01139, No. JP18H01160, No. JP19H01845, and No. JP18H01821), and KEK-PF (Proposal No. 2018S2-001). Publisher Copyright: {\textcopyright} 2020 American Physical Society.",
year = "2020",
month = aug,
day = "15",
doi = "10.1103/PhysRevB.102.085112",
language = "English",
volume = "102",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "8",
}