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|Type:||Artigo de periódico|
|Title:||Ferromagnetic state in ultrathin orthorhombic CrAs films: Thickness, lattice distortion, and half-metallic contributions|
de Camargo, PC
|Abstract:||Orthorhombic CrAs thin films were investigated using first-principles spin-polarized calculations in the full-potential linearized augmented plane-wave method. Our results consider two different geometry optimization processes and show that the ferromagnetic state is favored by b-axis expansion, being more stable than the antiferromagnetic state for film thickness below approximately 24 A. The calculated maximum magnetic moment per formula unit is near 3 mu(B) and decreases with increasing film thickness, in good agreement with the observed saturation magnetization. The electronic structure of very thin films with expanded b axis suggests a half-metallic behavior.|
|Editor:||American Physical Soc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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