Physics – Condensed Matter – Superconductivity
Scientific paper
1999-12-17
Physica C 328 (1999) 1-13
Physics
Condensed Matter
Superconductivity
13 pages with 6 figures, accepted for publication in Physica C
Scientific paper
10.1016/S0921-4534(99)00527-4
We performed susceptibility measurements on Y1-yCayBa2Cu3Ox single crystals under high He pressure. For each Ca content various samples with different oxygen contents have been prepared to probe the influence of Ca on Tc(x), dTc/dp(x) and Tc,max. Starting from the parabolic Tc(nh) behavior we calculated nh values from Tc and Tc,max for each sample. It is shown that in the overdoped region dTc/dp can be described by a pressure induced charge transfer with dnh/dp = 3.7E-3 [1/GPa] and a dTc,max/dp value of 0.8 K/GPa, irrespective of the Ca content. In the underdoped region additional pressure effects lead to a peak in dTc/dp at approximately 0.11 holes/CuO2 plane. However, with increasing Ca content this peak is strongly depressed. This is explained in terms of an increasing disorder in the CuO chain system due to doping. Deviations in dTc/dp at very low nh values can be assigned to the ortho II ordering in the CuO chain system.
Fietz Walter H.
Grube Kai
Klaeser M.
Obst Bernhard
Schlachter Sonja I.
No associations
LandOfFree
The Effect of Chemical Doping and Hydrostatic Pressure on Tc of Y1-yCayBa2Cu3Ox Single Crystals 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 The Effect of Chemical Doping and Hydrostatic Pressure on Tc of Y1-yCayBa2Cu3Ox Single Crystals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Effect of Chemical Doping and Hydrostatic Pressure on Tc of Y1-yCayBa2Cu3Ox Single Crystals will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-244824