TY - JOUR
T1 - Evidence for adiabatic polaren hopping in la0.65Ca0.35MnO3
AU - Lorenz, B.
AU - Heilman, A. K.
AU - Wang, Y. S.
AU - Xue, Y. Y.
AU - Chu, C. W.
AU - Chen, W.
AU - Franck, J. P.
N1 - Funding Information:
Figure 2. Ea as function of Tc for 160 (open squares) and 180 (full circles) isotopes of Lao 6sCao 35MnO3 This work is supported in part by NSF Grant No. DMR-9804325, MRSEC/NSF Grant No. DMR-9632667, the T. L. L. Temple Foundation, the John and Rebecca Moores Endowment, and the State of Texas through TCSUH. The work in Alberta is supported in part by the National Science and Engineering Research Council of Canada.
PY - 2000
Y1 - 2000
N2 - 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.
AB - 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.
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U2 - 10.1016/S0921-4534(00)00685-7
DO - 10.1016/S0921-4534(00)00685-7
M3 - Article
AN - SCOPUS:0342961755
SN - 0921-4534
VL - 341-348
SP - 771
EP - 772
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - PART 3
ER -