TY - JOUR
T1 - Ultrafast melting of charge ordering in LuFe 2O 4 probed by terahertz spectroscopy
AU - Itoh, H.
AU - Itoh, K.
AU - Anjyo, K.
AU - Nakaya, H.
AU - Akahama, H.
AU - Ohishi, D.
AU - Saito, S.
AU - Kambe, T.
AU - Ishihara, S.
AU - Ikeda, N.
AU - Iwai, S.
N1 - Funding Information:
This work was partly supported by Grant-In-Aid for Science Research , nos. 23740229 and 20340069 from the MEXT, Japan.
PY - 2013/1
Y1 - 2013/1
N2 - Ultrafast terahertz response of charge ordering (CO) in LuFe 2O 4 was investigated by near-infrared-pump (1.55 eV) and terahertz-probe (2-9 meV) spectroscopy. Photoinduced absorption observed immediately (1 ps) after the photoexcitation was attributed to photoinduced melting of the CO. The charge dynamics thereafter can be characterized by subsequent development of the photoinduced conductivity in the low-energy region (2-3 meV), implying the formation of a metallic state.
AB - Ultrafast terahertz response of charge ordering (CO) in LuFe 2O 4 was investigated by near-infrared-pump (1.55 eV) and terahertz-probe (2-9 meV) spectroscopy. Photoinduced absorption observed immediately (1 ps) after the photoexcitation was attributed to photoinduced melting of the CO. The charge dynamics thereafter can be characterized by subsequent development of the photoinduced conductivity in the low-energy region (2-3 meV), implying the formation of a metallic state.
KW - Charge ordering
KW - Iron oxide
KW - Terahertz spectroscopy
KW - Ultrafast spectroscopoy
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U2 - 10.1016/j.jlumin.2011.12.051
DO - 10.1016/j.jlumin.2011.12.051
M3 - Article
AN - SCOPUS:84868680203
SN - 0022-2313
VL - 133
SP - 149
EP - 151
JO - Journal of Luminescence
JF - Journal of Luminescence
ER -