Occurrence of maximum Tc at an optimal carrier concentration in superconducting bismuth and thallium cuprates

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Title:	Occurrence of maximum Tc at an optimal carrier concentration in superconducting bismuth and thallium cuprates
Authors:	Somasundaram, P Vijayaraghavan, R Nagarajan, R Seshadri, Ram Umarji, A M Rao, C N R
Keywords:	High−Tc Superconductors Superconductivity Transition Temperature Carrier Density Bismuth Oxides Calcium Oxides Yttrium Oxides Copper Oxides Strontium Oxides Thallium Oxides Barium Oxides Quantity Ratio Rare Earth Compounds
Issue Date:	29-Jan-1990
Publisher:	American Institute of Physics
Citation:	Applied Physics Letters 56(5), 487-489 (1990)
Abstract:	The superconducting transition temperatures in Bi2Ca1−xLnxSr2Cu2O8+δ, TlCa1−xLnxSr2Cu2O6+δ, and Tl0.8Ca1−xLnxBa2Cu23O6+δ (Ln=Y or rare earth) vary with composition and show a maximum at a specific value of x or δ. This observation suggests that an optimal carrier concentration is required to attain maximum Tc in such cuprates which seem to be two‐band systems.
Description:	Restricted Access
URI:	https://libjncir.jncasr.ac.in/xmlui/10572/737
Other Identifiers:	0003-6951
Appears in Collections:	Research Papers (Prof. C.N.R. Rao)

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