Evidence for adiabatic polaren hopping in la0.65Ca0.35MnO3

B. Lorenz, A. K. Heilman, Y. S. Wang, Y. Y. Xue, C. W. Chu, W. Chen, J. P. Franck

研究成果: Article同行評審


We have measured the oxygen isotope effect on the electrical properties of La0.65Ca0.35MnO3 under hydrostatic pressure up to 1.9 GPa. Special attention is paid to the conductivity activation energy, Ea, above the insulator-metal transition temperature, Tc. Ea is a universal linear fiinction of Tc. The change of Ea by pressure and isotopic mass can be scaled to the change of Tc. These results can be qualitatively understood in terms of the double exchange model and the adiabatic hopping of Jahn Teller polarons.

頁(從 - 到)771-772
期刊Physica C: Superconductivity and its applications
發行號PART 3
出版狀態Published - 2000

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程


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