caa a22 4500 445382856 CHVBK 20180317143022.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s10948-010-1051-y doi (NATIONALLICENCE)springer-10.1007/s10948-010-1051-y Enhanced Superconductivity in(Cu0.5Tl0.25M0.25)Ba2Ca2Cu3O10− δ Samples [Elektronische Daten] [M. Mumtaz, Nawazish Khan, Faheem Ashraf] The elements (M = Li, Na, K) of group I-A of the periodic table having lower electronegativity as compared to that of Tl have been partially doped at Tl sites in the (Cu0.5Tl0.25M0.25)Ba2O4−δ charge reservoir layer of (Cu0.5Tl0.25M0.25)Ba2Ca2Cu3O10−δ superconductor. The objective was to investigate the role of electron-phonon interactions and mobile charge carriers in the oxide high temperature superconductors. It has been observed from these studies that the superconductivity parameters were improved after the doping of lower electronegative elements in the charge reservoir layer. The substitution of lower electronegative elements retains smaller amount of oxygen in (Cu0.5Tl0.25M0.25)Ba2O4−δ charge reservoir layer, which in turn facilitates the transfer of mobile charge carriers to the conducting CuO2 planes. Springer Science+Business Media, LLC, 2010 (Cu0.5Tl0.25M0.25)Ba2Ca2Cu3O10− δ superconductor nationallicence Doping nationallicence Charge reservoir layer nationallicence Charge carriers nationallicence Electron-phonon interactions nationallicence Electronegativity nationallicence Mumtaz M. Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, 45320, Islamabad, Pakistan aut Khan Nawazish Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, 45320, Islamabad, Pakistan aut Ashraf Faheem Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, 45320, Islamabad, Pakistan aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1547-1551 1557-1939 24:5<1547 2011 24 10948 https://doi.org/10.1007/s10948-010-1051-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-1051-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mumtaz M. Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, 45320, Islamabad, Pakistan aut NATIONALLICENCE 700 1- Khan Nawazish Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, 45320, Islamabad, Pakistan aut NATIONALLICENCE 700 1- Ashraf Faheem Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, 45320, Islamabad, Pakistan aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1547-1551 1557-1939 24:5<1547 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer