Photoinduced melting of a stripe-type charge-order and metallic domain formation in a layered BEDT-TTF-based organic salt

Photoinduced melting of a stripe-type charge-order and metallic domain formation in a layered BEDT-TTF-based organic salt

Photoinduced melting of charge-order (CO) in [bis(ethylenedithiolo)]-tetrathiafulvalene (BEDT-TTF) salts was investigated by femotosecond spectroscopy. Comparative studies on two polytypes exhibiting large [theta-(BEDT-TTF)2RbZn(SCN)_{4}] and small [alpha-(BEDT-TTF)2I3] molecular rearrangements thro...

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Veröffentlicht in:Physical review letters 2007-03, Vol.98 (9), p.097402-097402
Hauptverfasser: Iwai, S, Yamamoto, K, Kashiwazaki, A, Hiramatsu, F, Nakaya, H, Kawakami, Y, Yakushi, K, Okamoto, H, Mori, H, Nishio, Y
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container_issue 9
container_start_page 097402
container_title Physical review letters
container_volume 98
creator Iwai, S
Yamamoto, K
Kashiwazaki, A
Hiramatsu, F
Nakaya, H
Kawakami, Y
Yakushi, K
Okamoto, H
Mori, H
Nishio, Y
description Photoinduced melting of charge-order (CO) in [bis(ethylenedithiolo)]-tetrathiafulvalene (BEDT-TTF) salts was investigated by femotosecond spectroscopy. Comparative studies on two polytypes exhibiting large [theta-(BEDT-TTF)2RbZn(SCN)_{4}] and small [alpha-(BEDT-TTF)2I3] molecular rearrangements through the CO transition were performed. Ultrafast melting of CO for both compounds demonstrates the major contribution of the electronic instability which is due to Coulomb interaction. The roles of the molecular rearrangements on the formation of the CO and the metallic domain are discussed on the basis of low-frequency lattice dynamics.
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title Photoinduced melting of a stripe-type charge-order and metallic domain formation in a layered BEDT-TTF-based organic salt
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