Journal
NATURE COMMUNICATIONS
Volume 5, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms6508
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Funding
- National Science Foundation of China [11025422, 11304371, 11220101003]
- National Basic Research Program of China [2014CB921500, 2011CB921700]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB01020300, XDB07000000]
- KAKENHI [23340101, 252460135]
- Ministry of Education, Culture, Sports, Science and Technology [24740220]
- JSPS [12F02023]
- Grants-in-Aid for Scientific Research [24740220, 12F02023, 23340101] Funding Source: KAKEN
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One of the common features of unconventional superconducting systems such as the heavy-fermion, high transition-temperature cuprate and iron-pnictide superconductors is that the superconductivity emerges in the vicinity of long-range antiferromagnetically ordered state. In addition to doping charge carriers, the application of external pressure is an effective and clean approach to induce unconventional superconductivity near a magnetic quantum critical point. Here we report on the discovery of superconductivity on the verge of antiferromagnetic order in CrAs via the application of external pressure. Bulk superconductivity with T-c approximate to 2 K emerges at the critical pressure P-c approximate to 8 kbar, where the first-order antiferromagnetic transition at T-N approximate to 265 K under ambient pressure is completely suppressed. The close proximity of superconductivity to an antiferromagnetic order suggests an unconventional pairing mechanism for CrAs. The present finding opens a new avenue for searching novel superconductors in the Cr and other transition metal-based systems.
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