Twisted Crystal Unlocks New Type of Superconductivity
Scientists have discovered a new material, Ag2Pd3S, that exhibits a rare form of superconductivity. This material is a 'chiral topological semimetal,' meaning its atomic structure is 'handed' like a spiral, and its electrons have unique properties. Finding superconductivity in such a twisted crystal is unusual and points to a new, 'unconventional' way these materials can conduct electricity without resistance.
This discovery helps scientists better understand how superconductivity works in exotic materials, which could eventually lead to new technologies for energy or super-fast computers.
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Unconventional Superconductivity in the Chiral Topological Semimetal Ag2Pd3S
arXiv:2606.29767v1 Announce Type: new Abstract: Chiral crystals provide a unique setting where broken inversion symmetry, strong spin-orbit coupling, and electronic topology intertwine, yet superconductivity in intrinsically chiral materials remains rare. Here, we report unconventional superconductivity in the chiral topological semimetal Ag$_2$Pd$_3$S, an enantiomorphic analog of natural mineral coldwellite, crystallizing in the right-handed space group $P4_132$. Bulk superconductivity with a transition temperature $T_C = 1.1(2)$ K is confirmed by electrical resistivity, magnetization, and s