| Autor: |
Soh, J-R, Schierle, E, Yan, Y, Su, H, Prabhakaran, D, Weschke, E, Guo, Y-F, Shi, YF, Boothroyd, AT |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| DOI: |
10.1103/physrevb.102.014408 |
| Popis: |
We have investigated the magnetic correlations in the candidate Weyl semimetals EuCd$_2Pn_2$, ($Pn$=As, Sb) by resonant elastic X-ray scattering (REXS) at the Eu$^{2+}$ $M_5$ edge. The temperature and field dependence of the diffuse scattering of EuCd$_2$As$_2$ provide direct evidence that the Eu moments exhibit slow ferromagnetic correlations well above the N\'{e}el temperature. By contrast, the diffuse scattering in the paramagnetic phase of isostructural EuCd$_2$Sb$_2$ is at least an order of magnitude weaker. The FM correlations present in the paramagnetic phase of EuCd$_2$As$_2$ could create short-lived Weyl nodes. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
