Field-induced dielectric response saturation in o-TaS3
| Autor: | Cedomir Petrovic, Xue-wei Wang, Cuimin Lu, Lijun Li, Xueli Du, Yongchang Ma |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Condensed matter physics Electric susceptibility 02 engineering and technology Dielectric Conductivity 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Polarization density Electric field 0103 physical sciences General Materials Science Soliton 010306 general physics 0210 nano-technology Saturation (magnetic) Quantum tunnelling |
| Zdroj: | Journal of physics. Condensed matter : an Institute of Physics journal. 28(39) |
| ISSN: | 1361-648X |
| Popis: | 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 [Formula: see text], 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. |
| Databáze: | OpenAIRE |
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