高分辨率共振非弹性X射线散射探测量子自旋梯子中的集体自旋激发
强关联电子
2019-09-06 v2
摘要
我们利用高分辨率Cu 边共振非弹性X射线散射(RIXS)研究了自旋梯子化合物SrCuO中的磁激发。我们的发现表明，RIXS与来自量子自旋液体基态的集体自旋激发耦合。与非弹性中子散射(INS)相比，RIXS的散射截面在整个布里渊区(BZ)内变化不大，显示出在小动量转移下也具有高灵敏度。双三线子能隙被确定为 meV。我们的结果得到了有限尺寸团簇有效哈伯德模型计算的支持。
引用
@article{arxiv.0901.1331,
title = {Collective spin excitations in a quantum spin ladder probed by high-resolution Resonant Inelastic X-ray Scattering},
author = {J. Schlappa and T. Schmitt and F. Vernay and V. N. Strocov and V. Ilakovac and B. Thielemann and H. M. Rønnow and S. Vanishri and A. Piazzalunga and X. Wang and L. Braicovich and G. Ghiringhelli and C. Marin and J. Mesot and B. Delley and L. Patthey},
journal= {arXiv preprint arXiv:0901.1331},
year = {2019}
}
备注
10 pages, 4 figures, revised version