Control of the competition between a magnetic phase and a superconducting phase in cobalt-doped and nickel-doped NaFeAs using electron count
Using a combination of neutron, muon, and synchrotron techniques we show how the magnetic state in NaFeAs can be tuned into superconductivity by replacing Fe by either Co or Ni. The electron count is the dominant factor, since Ni doping has double the effect of Co doping for the same doping level. W...
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| Veröffentlicht in: | Physical review letters 2010-02, Vol.104 (5), p.057007-057007, Article 057007 |
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| container_end_page | 057007 |
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| container_issue | 5 |
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| container_title | Physical review letters |
| container_volume | 104 |
| creator | Parker, Dinah R Smith, Matthew J P Lancaster, Tom Steele, Andrew J Franke, Isabel Baker, Peter J Pratt, Francis L Pitcher, Michael J Blundell, Stephen J Clarke, Simon J |
| description | Using a combination of neutron, muon, and synchrotron techniques we show how the magnetic state in NaFeAs can be tuned into superconductivity by replacing Fe by either Co or Ni. The electron count is the dominant factor, since Ni doping has double the effect of Co doping for the same doping level. We follow the structural, magnetic, and superconducting properties as a function of doping to show how the superconducting state evolves, concluding that the addition of 0.1 electrons per Fe atom is sufficient to traverse the superconducting domain, and that magnetic order coexists with superconductivity at doping levels less than 0.025 electrons per Fe atom. |
| doi_str_mv | 10.1103/physrevlett.104.057007 |
| format | Article |
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| title | Control of the competition between a magnetic phase and a superconducting phase in cobalt-doped and nickel-doped NaFeAs using electron count |
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