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

doi:10.1016/S0921-4534(00)00685-7

Evidence for adiabatic polaren hopping in la_0.65Ca_0.35MnO₃

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

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Abstract

We have measured the oxygen isotope effect on the electrical properties of La_0.65Ca_0.35MnO₃ under hydrostatic pressure up to 1.9 GPa. Special attention is paid to the conductivity activation energy, E_a, above the insulator-metal transition temperature, T_c. E_a is a universal linear fiinction of T_c. The change of Ea by pressure and isotopic mass can be scaled to the change of T_c. These results can be qualitatively understood in terms of the double exchange model and the adiabatic hopping of Jahn Teller polarons.

Original language	English
Pages (from-to)	771-772
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	341-348
Issue number	PART 3
DOIs	https://doi.org/10.1016/S0921-4534(00)00685-7
Publication status	Published - 2000

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(00)00685-7

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@article{90fec69286c446338d656a40142621e9,

title = "Evidence for adiabatic polaren hopping in la0.65Ca0.35MnO3",

abstract = "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.",

author = "B. Lorenz and Heilman, {A. K.} and Wang, {Y. S.} and Xue, {Y. Y.} and Chu, {C. W.} and W. Chen and Franck, {J. P.}",

note = "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.",

year = "2000",

doi = "10.1016/S0921-4534(00)00685-7",

language = "English",

volume = "341-348",

pages = "771--772",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "PART 3",

}

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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UR - http://www.scopus.com/inward/citedby.url?scp=0342961755&partnerID=8YFLogxK

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 -

Evidence for adiabatic polaren hopping in la_0.65Ca_0.35MnO₃

Abstract

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