Short-range polaron correlations in the ferromagnetic La1-xCaxMnO3

被引：180

作者：

Dai, PC

Fernandez-Baca, JA

Wakabayashi, N

Plummer, EW

Tomioka, Y

Tokura, Y

机构：

[1] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA

[2] Keio Univ, Dept Phys, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

[3] Univ Tennessee, Dept Phys, Knoxville, TN 37966 USA

[4] JRCAT, Tsukuba, Ibaraki 3058562, Japan

[5] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.85.2553

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use neutron scattering to demonstrate the presence of lattice polarons and their short-range correlations fur several samples of La1-xCaxMnO3 in the Ca doping range 0.15 less than or equal to x less than or equal to 0.3. We establish the duping dependence of the orientation, commensuration, and coherence length of the polaron correlations and show that the populations of correlated and uncorrelated polarons are intimately related to the transport properties of the materials.

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页码：2553 / 2556

页数：4

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