Ultrafast photoinduced melting of a spin-Peierls phase in an organic charge-transfer compound, K-tetracyanoquinodimethane

被引：80

作者：

Okamoto, H ^{[1
]}

Ikegami, K ^{[1
]}

Wakabayashi, T ^{[1
]}

Ishige, Y ^{[1
]}

Togo, J ^{[1
]}

Kishida, H ^{[1
]}

Matsuzaki, H ^{[1
]}

机构：

[1] Univ Tokyo, Dept Adv Mat Sci, Chiba 2778561, Japan

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.96.037405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ultrafast photoinduced phase transition in a spin-Peierls (SP) system of K-tetracyanoquinodimethane (K-TCNQ) was studied by femtosecond (fs) reflection spectroscopy. Photocarriers destabilize the SP phase, resulting in a decrease in molecular dimerization within 400 fs. Such a melting of the SP phase drives three kinds of coherent oscillations. By comparing the oscillations with the Raman bands activated by the dimerization, we show that the oscillation of 20 cm(-1) is due to an LO phonon, and it plays an important role for the stabilization of the SP phase.

引用

页数：4

共 14 条

[1] Ultrafast photoinduced melting of spin-Peierls phase in the organic charge-transfer compounds alkali-tetracyanoquinodimethane
Ikegami, K.
Ono, K.
Togo, J.
Wakabayashi, T.
Ishige, Y.
Matsuzaki, H.
Kishida, H.
Okamoto, H.
PHYSICAL REVIEW B, 2007, 76 (08)
[2] Ultrafast photoinduced melting of spin-Peierls phase in potassium-tetracyanoquinodimethane
Uemura, H.
Matsuzaki, H.
Okamoto, H.
LXIII YAMADA CONFERENCE ON PHOTO-INDUCED PHASE TRANSITION AND COOPERATIVE PHENOMENA (PIPT3), 2009, 148
[3] OPTICAL STUDY OF STRUCTURAL PHASE-TRANSITION IN ORGANIC CHARGE-TRANSFER CRYSTALS K-TETRACYANOQUINODIMETHANE AND RB-TETRACYANOQUINODIMETHANE
OKAMOTO, H
TOKURA, Y
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PHYSICAL REVIEW B, 1987, 36 (07): : 3858 - 3867
[4] Photoinduced complete melting of spin-Peierls phase in Na-tetracyanoquinodimethane revealed by frequency doubling of coherent molecular oscillations
Uemura, H.
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PHYSICAL REVIEW B, 2015, 91 (12)
[5] Ultrafast dynamics of a charge-transfer dimer as a model for the photoinduced phase transition of charge-transfer compounds
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Manzoni, Cristian
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[6] Incommensurate phase of the organic Spin-Peierls compound (TMTTF)2PF6
Brown, SE
Clark, WG
Alavi, B
Chow, DS
Merlic, CA
Tantillo, DJ
SYNTHETIC METALS, 1999, 103 (1-3) : 2056 - 2057
[7] Incommensurate phase of the organic Spin-Peierls compound (TMTTF)2PF6
Brown, S.E.
Clark, W.G.
Alavi, B.
Chow, D.S.
Merlic, C.A.
Tantillo, D.J.
Synthetic Metals, 1999, 103 (1 -3 pt 3): : 2056 - 2057
[8] Peierls transitions in ionic organic charge-transfer crystals with spin and charge degrees of freedom
Bewick, S. A.
Soos, Z. G.
JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (38): : 18748 - 18757
[9] Theory of photoinduced phase dynamics in organic charge-transfer complexes
Yonemitsu, K
JOURNAL OF LUMINESCENCE, 2005, 112 (1-4) : 279 - 282
[10] From Ultrafast Photoinduced Small Polarons to Cooperative and Macroscopic Charge-Transfer Phase Transition
Privault, G.
Herve, M.
Godin, N.
Bertoni, R.
Akagi, S.
Kubicki, J.
Tokoro, H.
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Lorenc, M.
Collet, Eric
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2024,

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