| Autor: |
Huddart, B. M., Birch, M. T., Pratt, F. L., Blundell, S. J., Porter, D. G., Clark, S. J., Wu, W., Julian, S. R., Hatton, P. D., Lancaster, T. |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
J. Phys.: Condens. Matter 31, 285803 (2019) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1088/1361-648X/ab151f |
| Popis: |
We present the results of x-ray scattering and muon-spin relaxation ($\mu^{+}$SR) measurements on the iron-pnictide compound FeCrAs. Polarized non-resonant magnetic x-ray scattering results reveal the 120$^\circ$ periodicity expected from the suggested three-fold symmetric, non-collinear antiferromagnetic structure. $\mu^+$SR measurements indicate a magnetically ordered phase throughout the bulk of the material below $T_\mathrm{N}$=105(5) K. There are signs of fluctuating magnetism in a narrow range of temperatures above $T_\mathrm{N}$ involving low-energy excitations, while at temperatures well below $T_\mathrm{N}$ behaviour characteristic of freezing of dynamics is observed, likely reflecting the effect of disorder in our polycrystalline sample. Using density functional theory we propose a distinct muon stopping site in this compound and assess the degree of distortion induced by the implanted muon. |
| Databáze: |
arXiv |
| Externí odkaz: |
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