441 citations · 1.6k across the 33 of their papers we have counts for
33 papers
X-ray View of Light-Induced Spin Reorientation in TmFeO: Direct Observation of a 90 Néel Vector Rotation
Somnath Jana, Ronny Knut, Dima Afanasiev +8
Using time-resolved X-ray magnetic linear dichroism in reflection, we provide a direct probe of the Néel vector dynamics in TmFeO on a ultrafast timescale. Our measurements rev…
Fluence dependent delay of Ni in an FeNi alloy supports an exchange based origin
Somnath Jana, Ronny Knut, Puloma Singh +9
The delayed demagnetization in Ni relative to Fe in the ultrafast demagnetization studies in FeNi alloy has led to two competing theoretical explanations: The Inhomogeneous Magnon…
Observation of Coherently Coupled Cation Spin Dynamics in an Insulating Ferrimagnetic Oxide
C. Klewe, P. Shafer, J. E. Shoup +11
Many technologically useful magnetic oxides are ferrimagnetic insulators, which consist of chemically distinct cations. Here, we examine the spin dynamics of different magnetic cat…
Element resolved evidence of superdiffusive terahertz spin current arising from ultrafast demagnetization process
R. Gupta, F. Cosco, R. S. Malik +13
Using element-specific measurements of the ultrafast demagnetization of Ru/FeCo heterostructures, we show that Ru can exhibit a significant magnetic contrast (3% asym…
Element selective ultrafast magnetization dynamics of hybrid Stoner-Heisenberg magnets
Mohamed F. Elhanoty, Olle Eriksson, Ronny Knut +2
Stoner and Heisenberg excitations in magnetic materials are inherently different. The former involves an effective reduction of the exchange splitting, whereas the latter comprises…
Experimental confirmation of the delayed Ni demagnetization in FeNi alloy
Somnath Jana, Ronny Knut, Shreyas Muralidhar +6
Element-selective techniques are central for the understanding of ultrafast spin dynamics in multi-element materials like magnetic alloys. Recently, though, it turned out that the…