The Steady High Magnetic Field Facility (SHMFF) research team from Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS), has discovered a groundbreaking new superconducting material called (InSe2)xNbSe2. This material has a unique lattice structure and a superconducting transition temperature of 11.6 K, making it the transition metal sulfide superconductor with the highest transition temperature under ambient pressure.
TMD materials are highly versatile and have applications in catalysis, energy storage, and integrated circuits. However, the low superconducting transition temperatures of TMD superconductors have limited their potential use.
In this study, scientists successfully fabricated a new superconducting material with the chemical formula (InSe2)xNbSe2. Unlike conventional conditions, where isolated atoms are inserted into the van de Waals gaps of low-dimensional materials, in (InSe2)xNbSe2, the intercalated indium atoms form InSe2-bonded chains.
Prof. Zhang Changjin, who led the team, stated, “This material has a very high transition temperature among all transition metal dichalcogenide (TMD) superconductors and exhibits an impressive critical current density.”
The superconducting transition temperature of the (InSe2)0.12NbSe2 sample can reach 11.6 K at ambient pressure, which is 60% higher than that of pristine NbSe2.
2024-01-20 02:00:03
Original from phys.org