Field-induced dielectric response saturation in o-TaS3. (3rd August 2016)

• Record Type: Journal Article
• Authors: Ma, Yongchang; Lu, Cuimin; Wang, Xuewei; Du, Xueli; Li, Lijun; Petrovic, Cedomir
• Is Part Of: Journal of physics. Volume 28:Number 39(2016)
• Publication Date: 2016-08-03
• Subjects: dielectric constant -- tunnelling -- soliton; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/0953-8984/28/39/395901
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We investigated dependence of the dielectric properties on temperature and electric field below 50 K along the chain direction of o -TaS3 . With external electric field increase, two threshold features could be identified. For electric fields somewhat larger than the lower threshold E T ′, the dielectric constant starts to decrease whereas the conductivity increases due to the tunnelling of solitons. For higher external electric field we observe a saturation of dielectric response and analyze that the possible reasons may be related to the polarization behavior of charged solitons. With a decrease in temperature, the effect of external field on the dielectric response of the system weakens gradually and at 13 K it diminishes due to soliton freezing.