Role of bosonic modes in the mechanism of high temperature Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+δ}$ superconductors using ultrafast optical techniques

Details Role of bosonic modes in the mechanism of high temperature Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+δ}$ superconductors using ultrafast optical techniques Role of bosonic modes in the mechanism of high temperature Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+δ}$ superconductors using ultrafast optical techniques

2008-06-16

arxiv.org/abs/0806.2664v1

Physics

Condensed Matter

Superconductivity

4 pages, 4 eps figures

Scientific paper

Using ultrafast optical techniques, we probe the hole-doping dependence of the electron-boson coupling constant $\lambda$ in Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta}$. In the overdoped region, we observe a correlation between ($\lambda$) and the superconducting transition temperature $T_{c}$. Upon performing the McMillan analysis, however, we find that $\lambda$ is too small to explain the high $T_{c}$'s, and that the Coulomb pseudopotential $\mu^{\ast}$ is negative. Our analysis therefore reveals two components in the mechanism of high-$T_{c}$ superconductivity -- a dominant pre-existing pairing interaction, together with a weaker electron-phonon interaction that fine-tunes $T_{c}$.

Affiliated with

Also associated with

No associations

Rating

Role of bosonic modes in the mechanism of high temperature Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+δ}$ superconductors using ultrafast optical techniques 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 Role of bosonic modes in the mechanism of high temperature Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+δ}$ superconductors using ultrafast optical techniques, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Role of bosonic modes in the mechanism of high temperature Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+δ}$ superconductors using ultrafast optical techniques will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-407710