TY - JOUR
T1 - Evidence of d-wave behavior in Pr1.85Ce0.15CuO3.97 aligned superconductors
AU - Ku, H. C.
AU - Hsu, Y. Y.
AU - Chang, B. C.
AU - Lin, B. N.
AU - Chiang, H. C.
AU - Yang, T. J.
PY - 2001/11
Y1 - 2001/11
N2 - The c-axis and in-plane alignment of 23 K Pr1.85Ce0.15CuO3.97 superconducting powder were achieved with powder/epoxy cylindrical holder perpendicular and parallel to the alignment field. The temperature dependencies of basal-plane penetration depth λab(T) and c-axis Josephson penetration depth λc(T) were derived using zero-field-cooled diamagnetic susceptibility χd(T) in a low applied field (Ba < Hc1) parallel or perpendicular to the aligned powder where small Pr Curie-Weiss paramagnetic susceptibility χp(T) was subtracted. Up to 0.5Tc, Δλab(T) = λab(T) - λab(0) as well as Josephson Δλc(T) can be well fitted with a d-wave-like power law c2T2 + c4T4, where T2-term is dominated below 0.3Tc. The present result agrees with recent phase-sensitive experiment, which indicates d-wave nature for electron-doped R1.85Ce0.15CuO4-δ (R = Pr, Nd) cuprates.
AB - The c-axis and in-plane alignment of 23 K Pr1.85Ce0.15CuO3.97 superconducting powder were achieved with powder/epoxy cylindrical holder perpendicular and parallel to the alignment field. The temperature dependencies of basal-plane penetration depth λab(T) and c-axis Josephson penetration depth λc(T) were derived using zero-field-cooled diamagnetic susceptibility χd(T) in a low applied field (Ba < Hc1) parallel or perpendicular to the aligned powder where small Pr Curie-Weiss paramagnetic susceptibility χp(T) was subtracted. Up to 0.5Tc, Δλab(T) = λab(T) - λab(0) as well as Josephson Δλc(T) can be well fitted with a d-wave-like power law c2T2 + c4T4, where T2-term is dominated below 0.3Tc. The present result agrees with recent phase-sensitive experiment, which indicates d-wave nature for electron-doped R1.85Ce0.15CuO4-δ (R = Pr, Nd) cuprates.
KW - d-wave symmetry
KW - Electron-doped cuprate
KW - High-T superconductor
UR - http://www.scopus.com/inward/record.url?scp=0035499762&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035499762&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(01)00773-0
DO - 10.1016/S0921-4534(01)00773-0
M3 - Article
AN - SCOPUS:0035499762
VL - 364-365
SP - 285
EP - 288
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
ER -