Occurrence of maximum <i>T</i> <i>c</i> at an optimal carrier concentration in superconducting bismuth and thallium cuprates — P. Somasundaram (1990) | RDL Network
Occurrence of maximum <i>T</i> <i>c</i> at an optimal carrier concentration in superconducting bismuth and thallium cuprates
Applied Physics Letters 56(5): 487-489
Article 1990 English
Authors
PS
P. Somasundaram
RV
R. Vijayaraghavan
RN
R. Nagarajan
Abstract
1 min read
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.
Cnr Rao, R. Nagarajan, R. Vijayaraghavan, N.Y. Vasanthacharya, Giridhar U. Kulkarni, Guanghui Rao, A.M. Umarji, P. Somasundaram, G. N. Subbanna, A. R. Raju, A. K. Sood, N. Chandrabhas
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