Hydrothermal Synthesis and Transport Properties of FeS1-xTex (0 ≤ x ≤ 0.15) Single Crystals
| Autor: | Jiajia Feng, Zhixiang Shi, Qiang Hou, Yufeng Zhang, Mingxiang Xu, Caiye Zhao, Xiaolei Yi |
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| Rok vydání: | 2021 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Magnetoresistance Scattering Doping Fermi surface 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Residual resistivity Electrical resistivity and conductivity Hall effect 0103 physical sciences 010306 general physics 0210 nano-technology |
| Zdroj: | Journal of Superconductivity and Novel Magnetism. 34:2565-2572 |
| ISSN: | 1557-1947 1557-1939 |
| Popis: | In this work, a series of FeS1-xTex (0 ≤ x ≤ 0.15) single crystals were successfully synthesized by a hydrothermal method for the first time. According to the measurement of in-plane resistivity, Hall effect, and magnetoresistance (MR), we find that the superconducting transition temperature Tc is rapidly suppressed with the increasing Te substitution, and finally the superconductivity disappears when x > 0.05. With the substitution of Te for S, the residual resistivity ρ0 increases while the residual resistivity ratio (RRR) decreases monotonously. Meanwhile, the MR of FeS1-xTex is also reduced by Te doping. All these results reveal that the Te substitution introduces more impurity scattering. In consequence, the non-linear field-dependent of Hall resistivity ρxy at low temperature region is suppressed and a linear behavior is restored upon Te doping. The negative Hall coefficients RH for all the FeS1-xTex samples suggest that the electron-type carrier dominates the electrical conduction. Moreover, the MR of FeS1-xTex obviously follows Kohler’s law, indicating the isotropic scattering rates in the Fermi surface. |
| Databáze: | OpenAIRE |
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