2012 Fiscal Year Final Research Report
Study on dielectric properties and charge ordering using terahertz spectroscopy
Project/Area Number |
23740229
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Condensed matter physics I
|
Research Institution | Tohoku University |
Principal Investigator |
ITOH Hirotake 東北大学, 大学院・理学研究科, 助教 (70565978)
|
Project Period (FY) |
2011 – 2012
|
Keywords | 光物性 / 強相関電子系 / 光誘起相転移 / 電荷秩序 / 超高速現象 / 鉄酸化物 |
Research Abstract |
Dielectric response and optical manipulation of charge ordering (CO) in LuFe_2O_4 were investigated by terahertz spectroscopy. Abrupt increase in optical conductivity was observed above the CO transition temperature. Photoabsorption observed immediately (1 ps) after the photoexcitation was attributed to the melting of the CO. The photoinduced phase was revealed to have Drude-like metallic state and anisotropic relaxation dynamics.
|
-
[Journal Article] Ultrafastmelting of charge ordering in LuFe_2O_4probed by terahertz spectroscopy2013
Author(s)
H. Itoh, K. Itoh, K. Anjyo, H. Nakaya, H. Akahama, D. Ohishi, S. Saito, T. Kambe, S.Ishihara, N. Ikeda, and S. Iwai
-
Journal Title
J. Lumin
Volume: 133
Pages: 149
DOI
Peer Reviewed
-
-
-
[Presentation] 層状鉄酸化物LuFe_2O_4における光誘起相転移の層間ダイナミクスIII2013
Author(s)
寒河江悠途,伊藤桂介,伊藤弘毅,岩井伸一郎,石原純夫,齋藤伸吾,狩野旬,永田知子,深田幸正,神戸高志,池田直
Organizer
日本物理学会第68回年次大会
Place of Presentation
広島大学
Year and Date
2013-03-26
-
[Presentation] LuFe_2O_4における光誘起相転移の超高速電荷-格子ダイナミクス2013
Author(s)
山田研太郎,石川貴悠,伊藤桂介,後藤和紀,寒河江悠途,伊藤弘毅,齋藤伸吾,狩野旬,永田知子,深田幸正,神戸高志,石原純夫,池田直,岩井伸一郎
Organizer
日本物理学会第68回年次大会
Place of Presentation
広島大学
Year and Date
2013-03-26
-
-
[Presentation] 層状鉄酸化物LuFe_2O_4における光誘起相転移の層間ダイナミクスII2012
Author(s)
伊藤桂介,伊藤弘毅,岩井伸一郎,石原純夫,齋藤伸吾,橋本顕一郎,佐々木孝彦,狩野旬,永田知子,深田幸正,神戸高志,池田直
Organizer
日本物理学会2012年秋季大会
Place of Presentation
横浜国立大学
Year and Date
2012-09-19
-
-
-
[Presentation] 層状鉄酸化物LuFe_2O_4における光誘起相転移の層間ダイナミクス2012
Author(s)
伊藤桂介,安生皓平,伊藤弘毅,岩井伸一郎,石原純夫,齋藤伸吾,狩野旬,永田知子,深田幸正,神戸高志,池田直
Organizer
日本物理学会第67回年次大会
Place of Presentation
関西学院大学
Year and Date
2012-03-24
-
-
-
-
[Presentation] Ultrafast Melting Of Charge Ordering In LuFe_2O_4 Probed By Terahertz Spectroscopy2011
Author(s)
H. Itoh, K.Itoh, K.Anjyo, H.Nakaya, H.Akahama, D.Ohishi, S.Saito, T.Kambe, S.Ishihara, N. Ikeda and S.Iwai
Organizer
16th International Conference on Luminescence
Place of Presentation
Michigan, US
Year and Date
2011-06-29
-