Details

Autor(en) / Beteiligte

• Zhang, Wei
• Jungfleisch, Matthias B
• Jiang, Wanjun
• Pearson, John E
• Hoffmann, Axel
• Freimuth, Frank
• Mokrousov, Yuriy

Titel

Spin Hall effects in metallic antiferromagnets

Ist Teil von

• Physical review letters, 2014-11, Vol.113 (19), p.196602-196602, Article 196602

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2014

Link zum Volltext

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We investigate four CuAu-I-type metallic antiferromagnets for their potential as spin current detectors using spin pumping and inverse spin Hall effect. Nontrivial spin Hall effects were observed for FeMn, PdMn, and IrMn while a much higher effect was obtained for PtMn. Using thickness-dependent measurements, we determined the spin diffusion lengths of these materials to be short, on the order of 1 nm. The estimated spin Hall angles of the four materials follow the relationship PtMn>IrMn>PdMn>FeMn, highlighting the correlation between the spin-orbit coupling of nonmagnetic species and the magnitude of the spin Hall effect in their antiferromagnetic alloys. These experiments are compared with first-principles calculations. Engineering the properties of the antiferromagnets as well as their interfaces can pave the way for manipulation of the spin dependent transport properties in antiferromagnet-based spintronics.