Dielectric response of soft mode in ferroelectric SrTiO3

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dc.creatorHan, Jiaguang
dc.creatorWan, Fan
dc.creatorZhu, Zhiyuan
dc.creatorZhang, Weili
dc.date2006-12-12
dc.date.accessioned2026-07-07T09:19:20Z
dc.date.available2026-07-07T09:19:20Z
dc.descriptionWe report far-infrared dielectric properties of powder form ferroelectric SrTiO3. Terahertz time-domain spectroscopy (THz-TDS) measurement reveals that the low-frequency dielectric response of SrTiO3 is a consequence of the lowest transverse optical (TO) soft mode TO1 at 2.70 THz (90.0 1/cm), which is directly verified by Raman spectroscopy. This result provides a better understanding of the relation of low-frequency dielectric function with the optical phonon soft mode for ferroelectric materials. Combining THz-TDS with Raman spectra, the overall low-frequency optical phonon response of SrTiO3 is presented in an extended spectral range from 6.7 1/cm to 1000.0 1/cm.
dc.description14 pages; 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0612296
dc.identifierhttp://arxiv.org/abs/cond-mat/0612296
dc.identifierdoi:10.1063/1.2431448
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/154353
dc.subjectMaterials Science
dc.titleDielectric response of soft mode in ferroelectric SrTiO3
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