Journal
PHYSICAL REVIEW B
Volume 86, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.86.224514
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Funding
- US Department of Energy, Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-AC02-07CH11358]
- State of Iowa through Iowa State University
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We present heat capacity, c-axis thermal expansion and pressure-dependent, low-field, temperature-dependent magnetization for pressures up to similar to 12 kbar, data for KFe2As2 single crystals. T-c decreases under pressure with dT(c)/dP approximate to -0.10 K/kbar. The inferred uniaxial, c-axis, pressure derivative is positive, dT(c)/dp(c) approximate to 0.11 K/kbar. The data are analyzed in comparison with those for overdoped Fe-based superconductors. Arguments are presented that superconductivity in KFe2As2 may be different from the other overdoped, Fe-based materials in the 122 family. DOI: 10.1103/PhysRevB.86.224514
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