Competing interactions in ferromagnetic/antiferromagnetic perovskite superlattices
Competing interactions in ferromagnetic/antiferromagnetic perovskite superlattices
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DOI：
10.1103/physrevb.80.180417
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发表时间：
2009-10
影响因子：
3.7
通讯作者：
Y. Takamura;Fan Yang;N. Kemik;E. Arenholz;M. Biegalski;H. Christen
中科院分区：
文献类型：
--
作者：
Y. Takamura;Fan Yang;N. Kemik;E. Arenholz;M. Biegalski;H. Christen
软x射线磁二色性、磁化和磁输运测量表明，La{sub 0.7}Sr{sub 0.3}FeO{sub 3}(LSFO)/La{sub 0.7}Sr{sub 0.3}MnO{sub 3}（LSMO）钙钛矿氧化物超晶格中不同磁相互作用（交换耦合、电子重建和远程相互作用）之间的竞争导致了意想不到的功能性质。LSFO的反铁磁有序参数和LSMO的铁磁有序参数对亚层厚度和温度的依赖程度不同，说明这些人工分层材料具有高度的可调性。
Soft x-ray magnetic dichroism, magnetization, and magnetotransport measurements demonstrate that the competition between different magnetic interactions (exchange coupling, electronic reconstruction, and long-range interactions) in La{sub 0.7}Sr{sub 0.3}FeO{sub 3}(LSFO)/La{sub 0.7}Sr{sub 0.3}MnO{sub 3}(LSMO) perovskite oxide superlattices leads to unexpected functional properties. The antiferromagnetic order parameter in LSFO and ferromagnetic order parameter in LSMO show a dissimilar dependence on sublayer thickness and temperature, illustrating the high degree of tunability in these artificially layered materials.