Unraveling higher-order contributions to spin excitations probed using resonant inelastic x-ray scattering
Unraveling higher-order contributions to spin excitations probed using resonant inelastic x-ray scattering
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揭示使用共振非弹性 X 射线散射探测的自旋激发的高阶贡献
DOI:
10.1103/physrevb.106.l060406
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发表时间:
2022
影响因子:
3.7
通讯作者:
Schmitt, Thorsten
中科院分区:
文献类型:
--
作者:
Kumar, Umesh;Nag, Abhishek;Li, Jiemin;Robarts, H. C.;Walters, A. C.;García-Fernández, Mirian;Saint-Martin, R.;Revcolevschi, A.;Schlappa, Justine;Schmitt, Thorsten
Resonant inelastic x-ray scattering (RIXS) is an evolving tool for investigating the spin dynamics of strongly correlated materials, which complements inelastic neutron scattering. In isotropic spin-Heisenberg antiferromagnetic (HAFM) spin chains, both techniques have observed non-spin-conserving (NSC) excitations confined to the two-spinon phase space. However, a recent O-edge RIXS study of the one-dimensional HAFMobserved spin-conserving (SC) four-spinon excitations outside the two-spinon phase space. Here, we demonstrate that analogous four-spinon excitations can also be accessed at the Cuedge in the related material. Through detailed modeling, we establish that these excitations appear in both the SC and NSC channels of the Cuedge, and are only captured by higher-order terms in the ultrashort core-hole lifetime expansion. Since these terms encode information about spin-spin correlations extending beyond nearest neighbors, our results offer different possibilities for studying nonlocal spin correlations in quantum magnets.
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影响因子:
3.3
作者:
Kumar, Umesh;Nocera, Alberto;Johnston, Steve
通讯作者:
Johnston, Steve
影响因子:
19.6
作者:
Kim, B. J.;Koh, H.;Kim, C.
通讯作者:
Kim, C.
影响因子:
64.8
作者:
Schlappa, J.;Wohlfeld, K.;Schmitt, T.
通讯作者:
Schmitt, T.
DOI:
10.1002/pssb.200304498
发表时间:
2004
期刊:
physica status solidi (b)
影响因子:
--
作者:
Y. Sidis;S. Pailhès;B. Keimer;P. Bourges;C. Ulrich;L. Regnault
通讯作者:
L. Regnault