Physics – Condensed Matter – Superconductivity
Scientific paper
1999-12-02
Physics
Condensed Matter
Superconductivity
Latex file, 14 pages, 3 figures (ps files included). To appear in Physica C
Scientific paper
Suppression of T_c in bilayer bismuth and thallium cuprates, by substitution of Co impurities at Cu sites, are taken for examination. T_c suppression data on differently doped Bi2212 and Tl2212 are analysed within the unitary pair-breaking formalism due to Abrikosov and Gorkov, by fitting data points to a phenomenological relation valid for weak coupling d-wave superconductors. Values of the pseudogap magnitude at each doping are thereby estimated within a "fermi-level density of states suppression" picture. Pseudogap magnitude from our estimation is observed to have a correspondence with a related characteristic temperature T^\star obtained by thermoelectric power measurements. Effects of pseudogap, on the density of states, is studied by calculating the susceptibility which shows a broad peak at high temperature. This peak feature in susceptibility is indicative of an unusual metallic state which could further be explored by systematic other measurements.
Bandyopadhyay Bijoy
Chattopadhyay Biplab
Das A. N.
Ghosh Biplab
Mandal Pabitra
No associations
LandOfFree
Impurity Substitution in Bismuth and Thallium Cuprates: Suppression of T_c and Estimation of Pseudogap 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 Impurity Substitution in Bismuth and Thallium Cuprates: Suppression of T_c and Estimation of Pseudogap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impurity Substitution in Bismuth and Thallium Cuprates: Suppression of T_c and Estimation of Pseudogap will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-262063