caa a22 4500 445382007 CHVBK 20180317143020.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-0964-9 doi (NATIONALLICENCE)springer-10.1007/s10948-010-0964-9 Ultrafast Dynamics of BiFeO3 Thin Films Studied by Dual-Color Femtosecond Spectroscopy [Elektronische Daten] [L. Chen, J. Yang, H. Shih, C. Liang, T.-Y. Wu, S. Chou, C. Luo, K. Wu, Y. Chu, T. Kobayashi] The ultrafast dynamics in (100)-oriented BiFeO3 thin films were studied from 20K to 300K by using the dual-color femtosecond pump-probe spectroscopy, which were performed by the 400nm (3.1eV) pump pulses above the energy gap of 2.67eV and the 800nm (1.55eV) probe pulses below the energy gap of 2.67eV. From the temperature-dependent transient reflectivity changes (ΔR/R), the anomalous changes were clearly observed below 200K caused by magnons. Thus, the femtosecond pump-probe spectroscopy could unambiguously reveal the magnetization dynamics in BiFeO3 with strong magnetoelectric coupling. Springer Science+Business Media, LLC, 2010 Multiferroics nationallicence BFO nationallicence Magnon nationallicence Pump-probe spectroscopy nationallicence Chen L. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut Yang J. Department of Materials Science and Engineering, National Chiao Tung University, 300, Hsinchu, Taiwan aut Shih H. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut Liang C. Department of Materials Science and Engineering, National Chiao Tung University, 300, Hsinchu, Taiwan aut Wu T.-Y Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut Chou S. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut Luo C. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut Wu K. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut Chu Y. Department of Materials Science and Engineering, National Chiao Tung University, 300, Hsinchu, Taiwan aut Kobayashi T. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 731-734 1557-1939 24:1-2<731 2011 24 10948 https://doi.org/10.1007/s10948-010-0964-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-0964-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen L. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Yang J. Department of Materials Science and Engineering, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Shih H. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Liang C. Department of Materials Science and Engineering, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Wu T.-Y Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Chou S. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Luo C. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Wu K. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Chu Y. Department of Materials Science and Engineering, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Kobayashi T. Department of Electrophysics, National Chiao Tung University, 300, Hsinchu, Taiwan aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 731-734 1557-1939 24:1-2<731 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer