DocumentCode :
2319776
Title :
IR pump-probe study of multiferroic LuMnO3
Author :
Jang, K.-J. ; Lim, J. ; Ahn, J. ; Kim, J. ; Yee, K.J. ; Ahn, J.S. ; Cheong, S.-W.
Author_Institution :
KAIST, Daejeon, South Korea
fYear :
2009
fDate :
21-25 Sept. 2009
Firstpage :
1
Lastpage :
2
Abstract :
We observe coherent phonons of 3.6 THz and 47 GHz oscillation frequencies of multiferroic LuMnO3 using femtosecond IR spectroscopy. Both coherent phonons disappear below TN as antiferromagnetically aligned spins strongly coupled with lattice vibration. This disappearance of phonons is related with the dynamic spin-phonon coupling and the giant magneto-elastic coupling near TN.
Keywords :
high-speed optical techniques; infrared spectra; lutetium compounds; magnetoelastic effects; multiferroics; spin-phonon interactions; IR pump-probe study; LuMnO3; coherent phonons; dynamic spin-phonon coupling; femtosecond IR spectroscopy; frequency 3.6 THz; frequency 47 THz; giant magneto-elastic coupling; lattice vibration; multiferroic materials; Antiferromagnetic materials; Ferroelectric materials; Frequency; Magnetic materials; Optical pulses; Optical pumping; Optical scattering; Phonons; Probes; Ultrafast optics;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
Type :
conf
DOI :
10.1109/ICIMW.2009.5324931
Filename :
5324931
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2319776
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