Altered magnetism and new electronic length scales in magneto-electric La2/3Sr1/3MnO3-BiFeO3 heterointerface
Altered magnetism and new electronic length scales in magneto-electric La2/3Sr1/3MnO3-BiFeO3 heterointerface
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DOI：
10.1088/1367-2630/15/11/113042
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发表时间：
2013-11-20
影响因子：
3.3
通讯作者：
Roy, S.
中科院分区：
文献类型：
--
作者：
Mishra, S. K.;Mazumdar, D.;Roy, S.
利用软X射线共振磁反射率测量了La 2/3Sr 1/3 MnO 3（LSMO）-BiFeO 3（BFO）磁电异质结构的电荷自旋密度分布。我们表明，即使是原子级尖锐的接口，接口轨道的空间范围可以扩展到几个晶格周期。虽然LSMO的磁化强度在界面处耗尽，但BFO确实主要在界面附近产生弱磁矩，这可能是由于邻近诱导的电荷转移过程。我们的研究表明，同时控制电子和磁性界面是必不可少的实现氧化物器件的潜力。
We map out the charge-spin density profile of magneto-electric La2/3Sr1/3MnO3 (LSMO)-BiFeO3 (BFO) heterostructure using soft x-ray resonant magnetic reflectivity. We show that the spatial extent of interface orbitals can extend over a few lattice periods even for an atomically sharp interface. While LSMO magnetization is depleted at the interface, BFO does develop a weak magnetic moment mostly near the interface, probably due to a proximity-induced charge-transfer process. Our study reveals that simultaneous control of electronic and magnetic interfaces is essential in realizing the potential of oxide devices.