arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.00752cond-mat.mtrl-sci
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用O $K$边共振非弹性X射线散射探测Sr $_2$ IrO $_4$中的单磁振子激发

Probing single magnon excitations in Sr$_2$IrO$_4$ using O $K$-edge resonant inelastic X-ray scattering

X. Liu, M. P. M. Dean, J. Liu, S. G. Chiuzbăian, N. Jaouen, A. Nicolaou, W. G. Yin, C. Rayan Serrao, R. Ramesh, H. Ding, J. P. Hill

摘要:

过渡金属元素$L$边的共振非弹性X射线散射(RIXS)现在常用于探测单磁振子激发。在这里,我们表明,单磁振子激发也可以测量与RIXS在周围的配体原子的$K$ -边缘时,中心重金属元素有很强的自旋轨道耦合。这是证明与氧$K$边缘RIXS实验上的钙钛矿Sr $_2$ IrO $_4$,其中低能量峰从单磁振子激发观察。RIXS的这种新应用具有良好的潜力,可应用于广泛的基于重元素的磁性系统,对于这些磁性系统,硬X射线区域中的$L$边缘RIXS能量分辨率通常较差。

英文摘要:

Resonant inelastic X-ray scattering (RIXS) at the $L$-edge of transition metal elements is now commonly used to probe single magnon excitations. Here we show that single magnon excitations can also be measured with RIXS at the $K$-edge of the surrounding ligand atoms when the center heavy metal elements have strong spin-orbit coupling. This is demonstrated with oxygen $K$-edge RIXS experiments on the perovskite Sr$_2$IrO$_4$, where low energy peaks from single magnon excitations were observed. This new application of RIXS has excellent potential to be applied to a wide range of magnetic systems based on heavy elements, for which the $L$-edge RIXS energy resolutions in the hard X-ray region is usually poor.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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