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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
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
Other Identifiers: 0003-6951
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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