Université de Fribourg

Superconducting and antiferromagnetic properties of dual-phase V3Ga

Jamer, Michelle E. ; Wilfong, Brandon ; Buchelnikov, Vasiliy D. ; Sokolovskiy, Vladimir V. ; Miroshkina, Olga N. ; Zagrebin, Mikhail A. ; Baigutlin, Danil R. ; Naphy, Jared ; Assaf, Badih A. ; Lewis, Laura H. ; Pulkkinen, Aki ; Barbiellini, Bernardo ; Bansil, Arun ; Heiman, Don

In: Applied Physics Letters, 2020, vol. 117, no. 6, p. 062401

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 ...