Topological Magnetism Group

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Field-induced condensation of $蟺$ to 2$蟺$ soliton lattices in chiral magnets

(2025)

Authors:

M Winter, A Pignedoli, Mc Rahn, As Sukhanov, B Achinuq, Jr Bollard, M Azhar, K Everschor-Sitte, D Pohl, S Schneider, A Tahn, V Ukleev, M Valvidares, A Thomas, D Wolf, P Vir, T Helm, G van der Laan, T Hesjedal, J Geck, C Felser, B Rellinghaus

Observation and manipulation of chiral phasons in a magnetic system

(2025)

Authors:

Shilei Zhang, Yang Wu, Zhang Chenhao, Jingyi Chen, Haonan Jin, Gerrit van der Laan, Thorsten Hesjedal, Yizhou Liu, Jiadong Zang, Xiao-Ping Liu

Combining in-situ transport experiments with real space imaging and resonant elastic X-ray scattering: chiral magnets in a transmission electron microscope

Microscopy and Microanalysis 91探花 University Press 31:S1 (2025)

Authors:

B Rellnighaus, A Thomas, M Winter, MC Rahn, AS Sukuhanov, A Than, S Schneider, A Pignedoli, M Azhar, K Evershor-Sitte, J Geck, G van der Laan, Thorsten Hesjedal, P Vir, C Felser, D Pohl

Intrinsic Magnetism and Field鈥怐riven Spin Alignment in NiI 2 Revealed by X鈥恟ay Magnetic Spectroscopy

physica status solidi - Rapid Research Letters Wiley (2025) 2500130

Authors:

Ethan L Arnold, Emily Heppell, Rabindra Basnet, Binshuo Zhang, Jieyi Liu, Javier Herrero鈥怣art铆n, Charles Guillemard, Yanfeng Guo, Jin Hu, Dirk Backes, Gerrit van der Laan, Thorsten Hesjedal

Abstract:

This study investigates the intrinsic magnetism and field鈥恉riven spin alignment in NiI2 using X鈥恟ay absorption spectroscopy and X鈥恟ay magnetic circular dichroism (XMCD). NiI2, a van der Waals material, exhibits helimagnetic and type鈥怚I multiferroic behavior. This study reveals robust XMCD signals across paramagnetic, antiferromagnetic, and helimagnetic phases under applied out鈥恛f鈥恜lane fields up to 6 T, while no net moment emerges at zero field. Atomic multiplet calculations confirm a covalent Ni 3d ground state with a significantly reduced spin moment. The results establish the intrinsic nature of NiI2's magnetism and clarify its field鈥恉riven spin alignment mechanism. This comprehensive spectroscopic characterization lays the foundation for future applications of NiI2 in advanced spintronic and multiferroic devices, despite challenges posed by its low transition temperature in the monolayer limit. Future research should focus on enhancing its critical temperature through doping, strain engineering, or heterostructure fabrication.

Magnetotransport Measurements in Overdoped Mn:Bi2Te3 Thin Films

Crystals MDPI 15:6 (2025) 557-557

Authors:

Angadjit Singh, Varun S Kamboj, Crispin HW Barnes, Thorsten Hesjedal