期刊
EPL
卷 87, 期 2, 页码 -出版社
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/87/27006
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资金
- DoE [DE-FG0206ER46275]
- NSF [DMR-0804432, DMR-0454672]
- Dept. of Commerce [6D6146]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0804432] Funding Source: National Science Foundation
In recent years it has become clear that complex oxides provide an exceptional platform for the discovery of new physics as well as a considerable challenge to our understanding of correlated electrons. The tendency of these materials to display nanoscale electronic and magnetic inhomogeneity is a good example. Here, we have applied a variety of experimental techniques to investigate this magneto-electronic phase separation in a model system-the doped cobaltite La1-xSrxCoO3. Comparing experimental data over a wide range of doping with statistical simulations, we conclude that the magneto-electronic inhomogeneity is driven solely by inevitable local compositional fluctuations at nanoscopic length scales. The phase separation is thus doping fluctuation-driven rather than electronically driven, meaning that more complex electronic phase separation models are not required to understand the observed phenomena in this material. Copyright c (C) EPLA, 2009
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