Synthesis and physical properties of the theoretically predicted spin-triplet superconductor Li0.9Mo6O17
| Autor: | Jianying Wang, Haipeng Zhu, M. Y. Shi, Jiezun Ke, Weinan Liu, Y.Q. Du, Chunfa Dong, M. Yang |
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| Rok vydání: | 2021 |
| Předmět: |
Superconductivity
Phase transition Flux method Zeeman effect Materials science Condensed matter physics Process Chemistry and Technology Surfaces Coatings and Films Electronic Optical and Magnetic Materials Paramagnetism symbols.namesake Electrical resistivity and conductivity Condensed Matter::Superconductivity Materials Chemistry Ceramics and Composites symbols Anisotropy Critical field |
| Zdroj: | Ceramics International. 47:25229-25235 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2021.05.234 |
| Popis: | We report the single crystal growth and characterization of the quasi-one-dimensional superconductor Li0.9Mo6O17 via temperature-gradient flux method. The grown single crystals show a clear ab plane identified by the x-ray diffraction (XRD) pattern. Temperature dependent resistivities reveal a metallic to semiconducting crossover at TM = 24 K followed by a superconducting transition at Tc = 2.2 K for ρ a and ρ c . In addition, the upper critical fields demonstrate a large anisotropy with H c 2 b > H c 2 a > H c 2 c both at ρ a and ρ c . Particularly, an upper critical field H c 2 b of about 16.2 T at zero temperature limit was deduced from the field dependence of resistivity measurements, which is notably larger than the estimated Pauli paramagnetic limit 3.1 T and supports the existence of the spin-triplet superconducting pairing and unconventional superconductivity in Li0.9Mo6O17. The XRD, resistivities and upper critical field measurements all imply a high quality of the as-grown Li0.9Mo6O17 samples. Furthermore, the interlayer and in-plane magnetoresistivity (MR) up to 60 T reveal the possible phase transition driven by the density-wave gap suppression and Zeeman split effect in the high field state. |
| Databáze: | OpenAIRE |
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