The binary compound V3Ga can exhibit two near-equilibrium phases, consisting of the A15 structure that is superconducting, and the Heusler D03 structure that is semiconducting and antiferromagnetic. Density functional theory calculations show that the two phases are closely degenerate, being separated by only ~10 meV/atom. Magnetization measurements on bulk-grown samples show superconducting behavior below 14 K. These results indicate the possibility of using V3Ga for quantum technology devices utilizing both superconductivity and antiferromagnetism at the same temperature.
@article{arxiv.2005.14348,
title = {Superconducting and Antiferromagnetic Properties of Dual-Phase V$_3$Ga},
author = {Michelle E. Jamer and Brandon Wilfong and Vasiliy D. Buchelnikov and Vladimir V. Sokolovskiy and Olga N. Miroshkina and Mikhail A. Zagrebin and Danil R. Baigutlin and Jared Naphy and Badih A. Assaf and Laura H. Lewis and Aki Pulkkinen and Bernardo A. Barbiellini and Arun Bansil and Don Heiman},
journal= {arXiv preprint arXiv:2005.14348},
year = {2020}
}