New Nature Physics article: close analogues to HTC cuprates grown in Argonne with a HKZ furnace

In a recent Nature Physics publication scientists from J. F. Mitchell's group at Argonne NL and their colleagues present the growth procedure and analysis results of the closest analogues to high-Tc cuprates yet reported: the nickelate Pr4Ni3O8.  Single crystals of this “promisig candidate for unconventional superconductivity” could be obtained after the high-pressure optical floating zone growth and subsequent reduction in a H2/Ar atmosphere. The authors “have shown, that bulk R438 crystals possess a combination of traits that are widely considered as important ingredients for high-Tc superconductivity in cuprates. “ This metallic square-planar nickelate is “a singularly promising candidate for high-Tc superconductivity if electron doping could be achieved.” We are very excited to hear the results of the doping attempts!

Zhang et al. 2017 abstract