Abstract
The recently discovered (Li1-xFex)OHFeSe superconductor with Tc about 40 K provides a good platform for investigating the magnetization and electrical transport properties of FeSe-based superconductors. By using a hydrothermal ion-exchange method, we have successfully grown crystals of (Li1-xFex)OHFeSe. X-ray diffraction on the sample shows the single crystalline PbO-type structure with the c-axis preferential orientation. Magnetic susceptibility and resistive measurements show an onset superconducting transition at around Tc=38.3 K. Using the magnetization hysteresis loops and Bean critical state model, a large critical current Js is observed in low temperature region. The critical current density is suppressed exponentially with increasing magnetic field. Temperature dependencies of resistivity under various currents and fields are measured, revealing a robust superconducting current density and bulk superconductivity.
Original language | English |
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Article number | 657404 |
Pages (from-to) | 1-5 |
Number of pages | 5 |
Journal | Science China: Physics, Mechanics and Astronomy |
Volume | 59 |
Issue number | 5 |
DOIs | |
State | Published - May 1 2016 |
Externally published | Yes |
Funding
This work was supported by the National Natural Science Foundation of China (Grant No. 11534005) and the Ministry of Science and Technology of China (Grant Nos. 2011CBA00102 and 2012CB821403).
Funders | Funder number |
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Ministry of Science and Technology of China | 2011CBA00102, 2012CB821403 |
National Natural Science Foundation of China | 11534005 |
Keywords
- critical currents
- iron chalcogenides
- magnetic properties
- transport properties