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Volumn 80, Issue 12, 2009, Pages

Anisotropic polarization π -molecular skeleton coupled dynamics in proton-displacive organic ferroelectrics

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EID: 70350675291     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.80.125134     Document Type: Article
Times cited : (15)

References (30)
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  • 20
    • 70350685170 scopus 로고    scopus 로고
    • We could not measure the dielectric spectra below 30 cm-1 above 160 K with the transmission geometry of the THz-time-domain spectroscopy since the transmittance is too small to be measured. This is perhaps because the spectral weight in this frequency range is fairly large due to the evolution of the low-frequency optical excitation.
    • We could not measure the dielectric spectra below 30 cm-1 above 160 K with the transmission geometry of the THz-time-domain spectroscopy since the transmittance is too small to be measured. This is perhaps because the spectral weight in this frequency range is fairly large due to the evolution of the low-frequency optical excitation.
  • 21
    • 0002546544 scopus 로고
    • 10.1103/RevModPhys.46.83
    • J. F. Scott, Rev. Mod. Phys. 46, 83 (1974). 10.1103/RevModPhys.46.83
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    • 70350679521 scopus 로고    scopus 로고
    • The data below 20 cm-1 is derived by the Kramers-Kronig analysis assuming the constant reflectivity.
    • The data below 20 cm-1 is derived by the Kramers-Kronig analysis assuming the constant reflectivity.
  • 23
    • 70350661352 scopus 로고    scopus 로고
    • The possible explanation for this discrepancy may be the presence of the much lower frequency optical excitation such as the domain-wall dynamics. The domain-wall excitation is generally observed in the sub-GHz frequency range and often dominates the dielectric property in the audio-frequency range in a variety of the ferroelectrics. Such a low-frequency excitation cannot be captured in the present study and is an issue for the future.
    • The possible explanation for this discrepancy may be the presence of the much lower frequency optical excitation such as the domain-wall dynamics. The domain-wall excitation is generally observed in the sub-GHz frequency range and often dominates the dielectric property in the audio-frequency range in a variety of the ferroelectrics. Such a low-frequency excitation cannot be captured in the present study and is an issue for the future.
  • 24
    • 0039261003 scopus 로고
    • 10.1088/0022-3719/19/15/012
    • B. Wyncke and F. Brehat, J. Phys. C 19, 2649 (1986). 10.1088/0022-3719/ 19/15/012
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    • Wyncke, B.1    Brehat, F.2
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    • 10.1103/PhysRev.124.1866
    • U. Fano, Phys. Rev. 124, 1866 (1961). 10.1103/PhysRev.124.1866
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    • Fano, U.1
  • 27


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.