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Superconducting and antiferromagnetic properties of dual-phase V3Ga

Authors: Michelle E. JamerBrandon Wilfong, Vasiliy D. Buchelnikov, Vladimir V. Sokolovskiy, Olga N. Miroshkina, Mikhail A. Zagrebin, Danil R. Baigutlin, Jared NaphyBadih A. Assaf, Laura H. Lewis, Aki Pulkkinen, Bernardo BarbielliniArun Bansil and Don Heiman

Appl. Phys. Lett. 117, 062401 (2020)

Abstract: The binary compound V3Ga can exhibit two near-equilibrium phases, the A15 structure that is superconducting and the Heusler D03 structure that is semiconducting and antiferromagnetic. Density functional theory calculations show that these two phases are nearly degenerate, being separated in energy by only ±10 meV/atom. Our magnetization measurements on bulk-grown samples show antiferromagnetism and superconducting behavior below 14 K. These results indicate the possibility of using V3Ga for quantum technology devices exploiting the co-existence of superconductivity and antiferromagnetism in a dual-phase material.


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