The chemical control of high-Tc superconductivity: Metal-superconductor-insulator transition in (Tl1-yPby)Sr2(Ca1-xYx)Cu2O7

R. S. Liu, P. P. Edwards, Shu-Fen Hu, D. A. Jefferson, Y. T. Huang, S. F. Wu, M. J. Tsai

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)


We have carried out a detailed study of the relationship between the semiconducting, the superconducting, and the metallic region in the system (Tl0.5Pb0.5)Sr2(Ca1-xYx)Cu2O7. The critical density (or concentration), nc, derived from Hall measurement of the titled series compounds at which the transition from insulator to metal place can be given by the well-known Mott formula: nc 1/3aH *=0.26 where aH * is the effective Bohr orbit radius of the isolated donor or acceptor state wavefunction. We propose that the insulator-metal transition in the cuprates generally occurs at a very high hole density (nc∼1020-1021cm-3) as compared to conventional doped semiconductors (nc∼1017-1018cm-3) but rather lower than the critical densities for elemental metals (nc>1021cm-3).

頁(從 - 到)1199-1203
期刊Journal of Electronic Materials
出版狀態已發佈 - 1993 十月 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

指紋 深入研究「The chemical control of high-T<sub>c</sub> superconductivity: Metal-superconductor-insulator transition in (Tl<sub>1-y</sub>Pb<sub>y</sub>)Sr<sub>2</sub>(Ca<sub>1-x</sub>Y<sub>x</sub>)Cu<sub>2</sub>O<sub>7</sub>」主題。共同形成了獨特的指紋。