TY - JOUR
T1 - Optical freezing of charge motion in an organic conductor
AU - Ishikawa, Takahiro
AU - Sagae, Yuto
AU - Naitoh, Yota
AU - Kawakami, Yohei
AU - Itoh, Hirotake
AU - Yamamoto, Kaoru
AU - Yakushi, Kyuya
AU - Kishida, Hideo
AU - Sasaki, Takahiko
AU - Ishihara, Sumio
AU - Tanaka, Yasuhiro
AU - Yonemitsu, Kenji
AU - Iwai, Shinichiro
N1 - Funding Information:
We are grateful to T. Oka (University of Tokyo) and Y. Kayanuma (Tokyo Institute of Technology) for their insightful discussions. This work was supported by Grant-in-Aid for Scientific Research (A) No. 23244062.
Publisher Copyright:
© 2014 Macmillan Publishers Limited. All rights reserved.
PY - 2014
Y1 - 2014
N2 - Dynamical localization, that is, reduction of the intersite electronic transfer integral t by an alternating electric field, E(ω), is a promising strategy for controlling strongly correlated systems with a competing energy balance between t and the Coulomb repulsion energy. Here we describe a charge localization induced by the 9.3 MV cm-1 instantaneous electric field of a 1.5 cycle (7 fs) infrared pulse in an organic conductor α-(bis[ethylenedithio]-tetrathiafulvalene)2I3. A large reflectivity change of >25% and a coherent charge oscillation along the time axis reflect the opening of the charge ordering gap in the metallic phase. This optical freezing of charges, which is the reverse of the photoinduced melting of electronic orders, is attributed to the ∼10% reduction of t driven by the strong, high-frequency (ω≥ t/H) electric field.
AB - Dynamical localization, that is, reduction of the intersite electronic transfer integral t by an alternating electric field, E(ω), is a promising strategy for controlling strongly correlated systems with a competing energy balance between t and the Coulomb repulsion energy. Here we describe a charge localization induced by the 9.3 MV cm-1 instantaneous electric field of a 1.5 cycle (7 fs) infrared pulse in an organic conductor α-(bis[ethylenedithio]-tetrathiafulvalene)2I3. A large reflectivity change of >25% and a coherent charge oscillation along the time axis reflect the opening of the charge ordering gap in the metallic phase. This optical freezing of charges, which is the reverse of the photoinduced melting of electronic orders, is attributed to the ∼10% reduction of t driven by the strong, high-frequency (ω≥ t/H) electric field.
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U2 - 10.1038/ncomms6528
DO - 10.1038/ncomms6528
M3 - Article
AN - SCOPUS:84923315875
SN - 2041-1723
VL - 5
JO - Nature Communications
JF - Nature Communications
M1 - 5528
ER -