3D tomographic imaging of skyrmionic cocoons using HERALDO
Jhon J. Chiliquinga-Jacome, Matthieu Grelier, Riccardo Battistelli, William Bouckaert, Krishnanjana Puzhekadavil Joy, Sophie Collin, Florian Godel, Marisel Di Pietro Mart\'inez, Claire Donnelly, Felix B\"uttner, Horia Popescu, Vincent Cros, Nicolas Reyren, Nicolas Jaouen

TL;DR
This paper demonstrates a novel 3D imaging technique using HERALDO to reconstruct the magnetization structure of skyrmionic cocoons in multilayer materials, revealing detailed internal features at nanoscale resolution.
Contribution
It introduces a vector tomographic reconstruction method with HERALDO for 3D magnetic textures, providing detailed insights into skyrmionic cocoons' structure and chirality.
Findings
Reconstructed 3D magnetization vectors with ~30 nm resolution.
Revealed vertical misalignment and chirality of skyrmionic cocoons.
Demonstrated HERALDO's effectiveness for nanoscale magnetic imaging.
Abstract
Uncovering the rich and intricate characteristics of three-dimensional (3D) magnetic textures is essential for functional materials such as magnetic multilayers, where the delicate balance of various magnetic interactions leads to complex 3D spin arrangements. Among these textures, skyrmionic cocoons-tubular 3D magnetic structures characterized by a closed magnetization surface wrapping around a core-have emerged as particularly intriguing. Stabilized by competing magnetic interactions, these textures reside within a fraction of the thickness of the magnetic material and exhibit a typical lateral size of approximately 100 nm. Here, we present a vector tomographic reconstruction of the 3D magnetization in aperiodic Pt/Co/Al chiral multilayers, where skyrmionic cocoons have been recently reported. Using soft X-ray Holography with Extended Reference by Autocorrelation Linear Differential…
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Taxonomy
TopicsMagnetic properties of thin films · Advanced X-ray Imaging Techniques · Metallic Glasses and Amorphous Alloys
