Photoinduced complete melting of spin-Peierls phase in Na-tetracyanoquinodimethane revealed by frequency doubling of coherent molecular oscillations

被引：2

作者：

Uemura, H. ^{[1
]}

Iwasawa, K. ^{[1
]}

Yamakawa, H. ^{[1
]}

Miyamoto, T. ^{[1
]}

Yada, H. ^{[1
]}

Okamoto, H. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 12期

基金：

日本学术振兴会;

关键词：

CRYSTAL-STRUCTURE; TRANSITION; VISUALIZATION; COMPOUND; STATE; ORDER;

D O I：

10.1103/PhysRevB.91.125111

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoinduced melting of the spin-Peierls phase was investigated in Na-tetracyanoquinodimethane by pump-probe reflection spectroscopy with a time resolution of 49 fs. Photoirradiation generates coherent molecular oscillation, which indicates that the spin-Peierls dimerization decreased. Increasing the excitation photon density to > 0.02 photon/molecule doubles the oscillation frequency attributable to recovery of the original symmetry, that is, complete melting of the spin-Peierls phase. We observed a complete photoinduced transition with symmetry recovery revealed by frequency doubling of coherent oscillations.

引用

页数：6

共 3 条

[1] 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
[2] Ultrafast photoinduced melting of a spin-Peierls phase in an organic charge-transfer compound, K-tetracyanoquinodimethane
Okamoto, H
Ikegami, K
Wakabayashi, T
Ishige, Y
Togo, J
Kishida, H
Matsuzaki, H
PHYSICAL REVIEW LETTERS, 2006, 96 (03)
[3] 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)

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