Physics – Condensed Matter – Superconductivity
Scientific paper
2006-11-13
Phys. Rev. B 75, 024516 (2007)
Physics
Condensed Matter
Superconductivity
6 pages, 5 figures
Scientific paper
10.1103/PhysRevB.75.024516
Motivated by a recent experiment on the bilayer Y$_{1-x}$Ca$_{x}$Ba$_2$Cu$_3$O$_y$ superconductor and based on a bilayer $t-J$ model, we calculate the spin susceptibility at different doping densities in the even and odd channels in a bilayer system. It is found that the intensity of the resonance peak in the even channel is much weaker than that in the odd one, with the resonance position being at a higher frequency. While this difference decreases as the doping increases, and both the position and amplitude of the resonance peaks in the two channels are very similar in the deeply overdoped sample. Moreover, the resonance frequency in the odd channel is found to be linear with the critical temperature $T_c$, while the resonance frequency increases as doping decreases in the even channel and tends to saturate at the underdoped sample. We elaborate the results based on the Fermi surface topology and the d-wave superconductivity.
Li Jian-Xin
Wang Zheng-Dong
Zhou Tianchun
No associations
LandOfFree
Doping dependance of the spin resonance peak in bilayer high-$T_c$ superconductors 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 dependance of the spin resonance peak in bilayer high-$T_c$ superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Doping dependance of the spin resonance peak in bilayer high-$T_c$ superconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-668829