标题： 从La(1-x)Sr(x)MnO(3)量子线阵列中的共振软X射线散射 显示英文标题

标题： Resonant soft x-ray scattering from La(1-x)Sr(x)MnO(3) quantum wire arrays

摘要： 我们描述了一种利用共振软X射线散射（RSXS）研究过渡金属氧化物量子线电子结构的策略。 使用电子束光刻和离子研磨，我们制备了由约5000根宽度为80纳米的巨磁电阻（CMR）相La(1-x)Sr(x)MnO(3)组成的周期性图案化阵列。 散射强度表现出一系列峰，这些峰可以解释为来自周期性结构的布拉格反射，或者等效地，来自类似光栅结构的衍射级次。 在Mn L(2,3)边缘进行的RSXS测量，该边缘具有较大的磁截面，显示出磁超结构的明确证据，其共格周期为五根线，我们将其解释为共格调制的反铁磁性。 这种超结构伴随着每根线内磁化强度的非平凡重新排列，很可能来源于各线之间的经典偶极相互作用。 我们引入了一个简单、可精确求解的解析模型，该模型能够半定量地捕捉RSXS数据的主要特征；该模型将作为未来对这些系统磁结构详细研究的基础。 显示英文摘要

摘要： We describe a strategy for using resonant soft x-ray scattering (RSXS) to study the electronic structure of transition metal oxide quantum wires. Using electron beam lithography and ion milling, we have produced periodic, patterned arrays of colossal magnetoresistance (CMR) phase La(1-x)Sr(x)MnO(3) consisting of ~ 5000 wires, each of which is 80 nm in width. The scattered intensity exhibits a series of peaks that can be interpreted as Bragg reflections from the periodic structure or, equivalently, diffraction orders from the grating-like structure. RSXS measurements at the Mn L(2,3) edge, which has a large magnetic cross section, show clear evidence for a magnetic superstructure with a commensurate period of five wires, which we interpret as commensurately modulated antiferromagnetism. This superstructure, which is accompanied by non-trivial reorganization of the magnetization within each wire, likely results from classical dipole interactions among the wires. We introduce a simple, exactly soluble, analytic model of the scattering that captures, semi-quantitatively, the primary features in the RSXS data; this model will act as a foundation for forthcoming, detailed studies of the magnetic structure in these systems.