| Autor: |
K. M. Martini, W. Franzen, M. El-Batanouny, M. Marynowski, Anna K. Swan |
| Rok vydání: |
1993 |
| Předmět: |
|
| Zdroj: |
Physical Review Letters. 71:1250-1253 |
| ISSN: |
0031-9007 |
| DOI: |
10.1103/physrevlett.71.1250 |
| Popis: |
Elastic scattering of metastable 2[sup 3][ital S] He has been used for the first time to determine the long-range spin ordering on the surface of an antiferromagnetic insulator. The diffraction pattern obtained from a NiO(100) surface is interpreted as a frozen spin-wave structure in the [l angle]10[r angle] direction with a period of 6[times][ital a]. The diffraction arises from a spatial variation of the beam attenuation due to scattering from the periodic local spin ordering on the surface and is [ital not] caused by a spin-spin interaction. The results have been modeled with a modified version of the eikonal approximation using a dissipative, hard, corrugated wall. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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