The breakthrough discovery of a new superconducting material has set a new record for a transition metal dichalcogenide superconductor with a transition temperature of 116 K, with a high critical current density, marks a significant advance in the development of superconductors.
A research team from the Hefei Institute of Physical Sciences (HFIPS) of the Chinese Academy of Sciences, with the support of the power transmission and magnetic measurement system of the Steady-State High Magnetic Field Facility (SHMFF), has discovered a new superconducting material called (INSE2)XNBSE2 with a unique lattice structure. The superconducting transition temperature of the material reaches 116 K, which is the transition metal sulfide superconductor with the highest transition temperature at ambient pressure.
The findings were published in the Journal of the American Chemical Society.
**Materials have received a lot of attention due to their wide range of applications in catalysis, energy storage, and integrated circuits. However, the relatively low superconducting transition temperature of superconductors limits their potential uses.
In this study, the scientists successfully prepared a novel superconducting material with the chemical formula (Inse2)XNBSE2. Unlike the traditional conditions of inserting isolated atoms into the van der Waals gap of low-dimensional materials, in (Inse2)XNBSE 2, embedded indium atoms are found to form InsE2 bonding chains.
Record-breaking superconductivity.
This material has a very high transition temperature among all transition metal chalcogenides (** superconductors," said Professor Changjin Zhang, who led the team, "and it exhibits an impressive critical current density."
inse2）0.The superconducting transition temperature of 12nBSE2 samples at ambient pressure can be as high as 116 K, 60% higher than the original NBSE2.
In addition, the (Inse2)XnbSe2 superconductor exhibits a large critical current density of 8 105 A cm2, which is also the highest of all *** superconductors. The critical current density is comparable to that of high-temperature superconductors such as cuprites and iron-based compounds, showing good application prospects.
According to the team, this discovery opens up new possibilities for advancing superconductivity research and the development of high-temperature superconductors with improved properties.
Reference: "Due to (inse2)0Superconductivity and Critical Current Density Enhanced by the Interaction of Inse2 Bonding Layers in 12nBSE2", by Rui Niu, Jiayang Li, Weili Zhen, Feng Xu, Shirui Weng, Zhilai Yue, Xiangmin Meng, Jing Xia, Ning Hao, and Changjin Zhang, January 5, 2024, Journal of the American Chemical Society.
doi： 10.1021/jacs.3c09756