TY - JOUR
T1 - Local characterization of superconductivity in BaF e2(A s1-x Px)2
AU - Lamhot, Y.
AU - Yagil, A.
AU - Shapira, N.
AU - Kasahara, S.
AU - Watashige, T.
AU - Shibauchi, T.
AU - Matsuda, Y.
AU - Auslaender, O. M.
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/2/12
Y1 - 2015/2/12
N2 - We use magnetic force microscopy (MFM) to characterize superconductivity across the superconducting dome in BaFe2(As1-xPx)2, a pnictide with a peak in the penetration depth (λab) at optimal doping (xopt), as shown in sample-wide measurements. Our local measurements show a peak at xopt and a TC vs λab-2 dependence similar on both sides of xopt. Near the underdoped edge of the dome λab increases sharply, suggesting that superconductivity competes with another phase. Indeed, MFM vortex imaging shows correlated defects parallel to twin boundaries only in underdoped samples and not for x≥xopt.
AB - We use magnetic force microscopy (MFM) to characterize superconductivity across the superconducting dome in BaFe2(As1-xPx)2, a pnictide with a peak in the penetration depth (λab) at optimal doping (xopt), as shown in sample-wide measurements. Our local measurements show a peak at xopt and a TC vs λab-2 dependence similar on both sides of xopt. Near the underdoped edge of the dome λab increases sharply, suggesting that superconductivity competes with another phase. Indeed, MFM vortex imaging shows correlated defects parallel to twin boundaries only in underdoped samples and not for x≥xopt.
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U2 - 10.1103/PhysRevB.91.060504
DO - 10.1103/PhysRevB.91.060504
M3 - Article
AN - SCOPUS:84923197612
SN - 1098-0121
VL - 91
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 6
M1 - 060504
ER -