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DEPHASING DYNAMICS OF THE VIBRONIC STATES OF EPITAXIAL POLYDIACETYLENE FILMS
被引:56
作者:

PHAM, TA
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INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE

DAUNOIS, A
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INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE

MERLE, JC
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INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE

LEMOIGNE, J
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INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE

BIGOT, JY
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INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE
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[1] INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,EHICS,ULP,CNRS,UNITE MIXTE 380046,F-67037 STRASBOURG,FRANCE
关键词:
D O I:
10.1103/PhysRevLett.74.904
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
The dynamics of polydiacetylene (pDCH) vibronic states has been measured with photon echoes and pump probe techniques using femtosecond optical pulses. The excitonic dephasing (52 fs) is shown to be dominated by interactions between excitons and the vibration modes of the polymer chain. The importance of the C=C double bonds compared to the C= C triple bonds shows up both in the dephasing and early population dynamics. These results sugest that just after excitation the polydiacetylene backbone undertakes a transient structural change with a butatrieniclike distribution of the electronic states. © 1995 The American Physical Society.
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页码:904 / 907
页数:4
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