Physics – Condensed Matter – Superconductivity
Scientific paper
2006-12-20
Physics
Condensed Matter
Superconductivity
7 pages, 9 figures, submitted to European Physical Journal B
Scientific paper
10.1140/epjb/e2007-00149-8
Strongly underdoped RuSr_1.9La_0.1GdCu_2O_8 has been comprehensively studied by dc magnetization, microwave measurements, magnetoresistivity and Hall resistivity in fields up to 9 T and temperatures down to 1.75 K. Electron doping by La reduces the hole concentration in the CuO2 planes and completely suppresses superconductivity. Microwave absorption, dc resistivity and ordinary Hall effect data indicate that the carrier concentration is reduced and a semiconductor-like temperature dependence is observed. Two magnetic ordering transitions are observed. The ruthenium sublattice orders antiferromagnetically at 155 K for low applied magnetic field and the gadolinium sublattice antiferromagnetically orders at 2.8 K. The magnetoresistivity exhibits a complicated temperature dependence due to the combination of the two magnetic orderings and spin fluctuations. It is shown that the ruthenium magnetism influences the conductivity in the RuO2 layers while the gadolinium magnetism influences the conductivity in the CuO2 layers. The magnetoresistivity is isotropic above 4 K, but it becomes anisotropic when gadolinium orders antiferromagnetically.
Basletic Mario
Dulcic A.
Hamzic Amir
Kraemer Stephan
Pozek Miroslav
No associations
LandOfFree
Magnetotransport of lanthanum doped RuSr2GdCu2O8 - the role of gadolinium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetotransport of lanthanum doped RuSr2GdCu2O8 - the role of gadolinium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetotransport of lanthanum doped RuSr2GdCu2O8 - the role of gadolinium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-241674