TY - JOUR
T1 - The superconductor KxSr1-xFe2As 2
T2 - Normal state and superconducting properties
AU - Lv, B.
AU - Gooch, M.
AU - Lorenz, B.
AU - Chen, F.
AU - Guloy, A. M.
AU - Chu, C. W.
PY - 2009/2/27
Y1 - 2009/2/27
N2 - The normal state and superconducting properties are investigated in the phase diagram of KxSr1-xFe2As2 for 0 ≤ x ≤ 1. The ground state upper critical field, Hc2(0), is extrapolated from magnetic field-dependent resistivity measurements. H c2(0) scales with the critical temperature, Tc, of the superconducting transition. In the normal state, the Seebeck coefficient is shown to experience a dramatic change near a critical substitution of x ∼ 0.3. This is associated with the formation of a spin density wave state above the superconducting transition temperature. The results provide strong evidence for the reconstruction of the Fermi surface with the onset of magnetic order.
AB - The normal state and superconducting properties are investigated in the phase diagram of KxSr1-xFe2As2 for 0 ≤ x ≤ 1. The ground state upper critical field, Hc2(0), is extrapolated from magnetic field-dependent resistivity measurements. H c2(0) scales with the critical temperature, Tc, of the superconducting transition. In the normal state, the Seebeck coefficient is shown to experience a dramatic change near a critical substitution of x ∼ 0.3. This is associated with the formation of a spin density wave state above the superconducting transition temperature. The results provide strong evidence for the reconstruction of the Fermi surface with the onset of magnetic order.
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U2 - 10.1088/1367-2630/11/2/025013
DO - 10.1088/1367-2630/11/2/025013
M3 - Article
AN - SCOPUS:63449088169
SN - 1367-2630
VL - 11
JO - New Journal of Physics
JF - New Journal of Physics
M1 - 025013
ER -