Raising the superconducting $T_{\mathrm{c}}$ of gallium: in-situ characterization of the transformation of $\alpha$-Ga into $\beta$-Ga

D. Campanini, Z. Diao, A. Rydh

Gallium (Ga) displays several metastable phases. Superconductivity is strongly enhanced in the metastable $\beta$-Ga with a critical temperature $T_\mathrm{c}= 6.04(5)\,\mathrm{…