Robust superconductivity and transport properties in (Li1-xFe x)OHFeSe single crystals

Hai Lin; Jie Xing; Xi Yu Zhu; Huan Yang; Hai Hu Wen

doi:10.1007/s11433-016-5782-z

Robust superconductivity and transport properties in (Li_1-xFe_x)OHFeSe single crystals

Hai Lin, Jie Xing, Xi Yu Zhu, Huan Yang, Hai Hu Wen

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The recently discovered (Li_1-xFe_x)OHFeSe superconductor with T_c 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 (Li_1-xFe_x)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 T_c=38.3 K. Using the magnetization hysteresis loops and Bean critical state model, a large critical current J_s 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
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	https://doi.org/10.1007/s11433-016-5782-z
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
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

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1007/s11433-016-5782-z

Cite this

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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.",

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