Physics – Condensed Matter – Superconductivity
Scientific paper
2010-06-10
Phys. Rev. B 82, 054507 (2010)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1103/PhysRevB.82.054507
The zero temperature value of the in-plane London penetration depth, $\lambda_{ab}(0)$, has been measured in single crystals of Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ as a function of the Co concentration, $x$, across both the underdoped and overdoped superconducting regions of the phase diagram. For $x\gtrsim0.047$, $\lambda_{ab}(0)$ has been found to have values between 120 $\pm$ 50~nm and 300 $\pm$ 50~nm. A pronounced increase in $\lambda_{ab}(0)$, to a value as high as 950 $\pm$ 50~nm, has been observed for $x\lesssim0.047$, corresponding to the region of the phase diagram where the itinerant antiferromagnetic and superconducting phases coexist and compete. Direct determination of the doping-dependent $\lambda_{ab}(0)$ has allowed us to track the evolution of the temperature-dependent superfluid density, from which we infer the development of a pronounced superconducting gap anisotropy at the edges of the superconducting dome.
Bud'ko Sergey L.
Canfield Paul. C.
Fernandes Rafael M.
Giannetta Russell W.
Gordon R. T.
No associations
LandOfFree
Doping evolution of the absolute value of the London penetration depth and superfluid density in single crystals of Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ 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 Doping evolution of the absolute value of the London penetration depth and superfluid density in single crystals of Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Doping evolution of the absolute value of the London penetration depth and superfluid density in single crystals of Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-492469