Physics – Condensed Matter – Superconductivity
Scientific paper
2003-03-15
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1103/PhysRevB.69.064505
The far-infrared dielectric response of superlattices (SL) composed of superconducting YBa$_{2}$Cu$_{3}$O$_{7}$ (YBCO) and ferromagnetic La$_{0.67}$% Ca$_{0.33}$MnO$_{3}$ (LCMO) has been investigated by ellipsometry. A drastic decrease of the free carrier response is observed which involves an unusually large length scale of d$^{crit}\approx $20 nm in YBCO and d$^{crit}\approx $10 nm in LCMO. A corresponding suppression of metallicity is not observed in SLs where LCMO is replaced by the paramagnetic metal LaNiO$_{3}$. Our data suggest that either a long range charge transfer from the YBCO to the LCMO layers or alternatively a strong coupling of the charge carriers to the different and competitive kind of magnetic correlations in the LCMO and YBCO layers are at the heart of the observed metal/insulator transition. The low free carrier response observed in the far-infrared dielectric response of the magnetic superconductor RuSr$_{2}$GdCu$_{2}$O$_{8}$ is possibly related to this effect.
Bernhard Christian
Boris A.
Cristiani G.
Golnik Andrzej
Habermeier Hanns-Ulrich
No associations
LandOfFree
Proximity induced metal/insulator transition in $Y Ba_2 Cu_3 O_7 / La_{2/3} Ca_{1/3} Mn O_3$ superlattices 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 Proximity induced metal/insulator transition in $Y Ba_2 Cu_3 O_7 / La_{2/3} Ca_{1/3} Mn O_3$ superlattices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proximity induced metal/insulator transition in $Y Ba_2 Cu_3 O_7 / La_{2/3} Ca_{1/3} Mn O_3$ superlattices will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-217833