Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.117001
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Funding
- National Basic Research Program of China [2014CB921500, 2011CB921700, 2015CB921300]
- National Science Foundation of China [11304371, 11025422]
- Strategic Priority Research Program (B) of the Chinese Academy of Sciences [XDB07020100, XDB01020300]
- KAKENHI [23340101, 252460135]
- JSPS [12F02023]
- Grants-in-Aid for Scientific Research [23340101, 12F02023] Funding Source: KAKEN
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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 T-sc approximate to 1 K emerges and exists merely near the critical pressure P-c approximate to 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 quasiparticle effective mass near P-c associated with the magnetic quantum fluctuations.
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