%0 Journal Article
%T Pressure induced superconductivity on the border of magnetic order in MnP
%A J. -G. Cheng
%A K. Matsubayashi
%A W. Wu
%A J. P. Sun
%A F. K. Lin
%A J. L. Luo
%A Y. Uwatoko
%J Physics
%D 2014
%I arXiv
%R 10.1103/PhysRevLett.114.117001
%X We report the discovery of superconductivity on the border of long-range magnetic order in the itinerant-electron helimagnet MnP via the application of high pressure. Superconductivity with Tsc~1 K emerges and exists merely near the critical pressure Pc~8 GPa, where the long-range magnetic order just vanishes. The present finding makes MnP the first Mn-based superconductor. The close proximity of superconductivity to a magnetic instability suggests an unconventional pairing mechanism. Moreover, the detailed analysis of the normal-state transport properties evidenced non-Fermi-liquid behavior and the dramatic enhancement of the quasi-particle effective mass near Pc associated with the magnetic quantum fluctuations.
%U http://arxiv.org/abs/1412.7883v1