High-pressure electrical resistance measurements have been performed on single crystal Ba0.5Sr0.5Fe2As2 platelets to pressures of 16 GPa and temperatures down to 10 K using designer diamond anvils under quasi-hydrostatic conditions with an insulating steatite pressure medium. The resistance measurements show evidence of pressure-induced superconductivity with an onset transition temperature at ~31 K and zero resistance at ~22 K for a pressure of 3.3 GPa. The transition temperature decreases gradually with increasing in pressure before completely disappearing for pressures above 12 GPa. The present results provide experimental evidence that a solid solution of two 122-type materials, e.g., Ba1-x.SrxFe2As2 (0 < x <1), can also exhibit superconductivity under high pressure
@article{arxiv.1210.3603,
title = {Pressure Induced Superconductivity in Ba0.5Sr0.5Fe2As2},
author = {Georgiy M. Tsoi and Walter Malone and Walter Uhoya and Jonathan E. Mitchel and Yogesh K. Vohra and Lowell E. Wenger and Athena S. Sefat and S. T . Weir},
journal= {arXiv preprint arXiv:1210.3603},
year = {2014}
}