@inproceedings{ef3cb98fff4049d195c29d024b2d2a19,
title = "Ultrafast carrier dynamics and radiative recombination in multiferroic BiFeO3 single crystals and thin films",
abstract = "We report a detailed comparison of ultrafast carrier dynamics in single crystals and thin films of multiferroic BiFeO3 (BFO). Using degenerate femtosecond optical pump-probe spectroscopy, we find that the observed dynamics are qualitatively similar in both samples. After photoexcitation, electrons relax to the conduction band minimum through electron-phonon coupling, with subsequent carrier relaxation proceeding via various recombination pathways that extend to a nanosecond timescale. Subtle differences observed in our measurements indicate that BFO films have a higher band gap than single crystals. Overall, our results demonstrate that carrier relaxation in BFO is analogous to that in bulk semiconductors.",
author = "Yu-Miin Sheu and Trugman, {S. A.} and J. Xiong and Park, {Y. S.} and S. Lee and Yi, {H. T.} and Cheong, {S. W.} and Jia, {Q. X.} and Taylor, {A. J.} and Prasankumar, {R. P.}",
year = "2013",
month = apr,
day = "5",
doi = "10.1051/epjconf/20134103018",
language = "English",
isbn = "9782759809561",
series = "EPJ Web of Conferences",
booktitle = "18th International Conference on Ultrafast Phenomena, UP 2012",
note = "18th International Conference on Ultrafast Phenomena, UP 2012 ; Conference date: 08-07-2012 Through 13-07-2012",
}