TY - JOUR
T1 - Optical spectroscopy of the neutral-ionic phase transition in a charge-transfer complex
T2 - ISCOM 2001
AU - Okimoto, Y.
AU - Horiuchi, S.
AU - Saitoh, E.
AU - Kumai, R.
AU - Okamoto, H.
AU - Tokura, Y.
PY - 2003/3/13
Y1 - 2003/3/13
N2 - Far-infrared reflectivity spectra have been investigated for a charge-transfer complex of tetrathiafulvalene and 2-bromo-3,5,6-trichloro-p-benzoquinone, which undergoes a neutral-ionic (N-I) transition at Tc = 68 K. With decrease in temperature toward Tc, the far-infrared reflectivity spectrum is gradually transformed into a Drude-like high reflectance band edging around 100 cm-1, and the optical conductivity shows an anomalous peak around 10 cm-1. The far-infrared anomaly is related to the gigantic dielectric response just above Tc, which are both discussed in terms of dynamics of N-I domain walls with fractional charge.
AB - Far-infrared reflectivity spectra have been investigated for a charge-transfer complex of tetrathiafulvalene and 2-bromo-3,5,6-trichloro-p-benzoquinone, which undergoes a neutral-ionic (N-I) transition at Tc = 68 K. With decrease in temperature toward Tc, the far-infrared reflectivity spectrum is gradually transformed into a Drude-like high reflectance band edging around 100 cm-1, and the optical conductivity shows an anomalous peak around 10 cm-1. The far-infrared anomaly is related to the gigantic dielectric response just above Tc, which are both discussed in terms of dynamics of N-I domain walls with fractional charge.
KW - Neutral-ionic domain wall
KW - Neutral-ionic transition
KW - Optical conductivity
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U2 - 10.1016/S0379-6779(02)00443-5
DO - 10.1016/S0379-6779(02)00443-5
M3 - Conference article
AN - SCOPUS:0037435227
SN - 0379-6779
VL - 133-134
SP - 637
EP - 639
JO - Synthetic Metals
JF - Synthetic Metals
Y2 - 10 September 2001 through 14 September 2001
ER -