Professor Thorsten Hesjedal FInstP: Publications

Correction to “Rolling Motion of Rigid Skyrmion Crystallites Induced by Chiral Lattice Torque”

Nano Letters American Chemical Society (ACS) (2025)

Authors:

Haonan Jin, Jingyi Chen, Gerrit van der Laan, Thorsten Hesjedal, Yizhou Liu, Shilei Zhang

Quantum anomalous Hall effect for metrology

(2025)

Authors:

Nathaniel J Huáng, Jessica L Boland, Kajetan M Fijalkowski, Charles Gould, Thorsten Hesjedal, Olga Kazakova, Susmit Kumar, Hansjörg Scherer

Synthesis of Nanocrystalline Mn-Doped Bi2Te3 Thin Films via Magnetron Sputtering

Crystals MDPI 15:1 (2025) 54-54

Authors:

Joshua Bibby, Angadjit Singh, Emily Heppell, Jack Bollard, Barat Achinuq, Sarah J Haigh, Gerrit van der Laan, Thorsten Hesjedal

Room-temperature in-plane ferromagnetism in Co-substituted Fe₅GeTe₂ investigated by magnetic x-ray spectroscopy and microscopy

2D Materials IOP Publishing 12:2 (2025) 025001-025001

Authors:

Emily Heppell, Ryuji Fujita, Gautam Gurung, Jheng-Cyuan Lin, Andrew F May, Michael Foerster, M Waqas Khaliq, Miguel Angel Niño, Manuel Valvidares, Javier Herrero-Martín, Pierluigi Gargiani, Kenji Watanabe, Takashi Taniguchi, Dirk Backes, Gerrit van der Laan, Thorsten Hesjedal

Abstract:

The exploration of two-dimensional (2D) van der Waals ferromagnets has revealed intriguing magnetic properties with significant potential for spintronics applications. In this study, we examine the magnetic properties of Co-doped Fe5GeTe2 using x-ray photoemission electron microscopy (XPEEM) and x-ray magnetic circular dichroism (XMCD), complemented by density functional theory calculations. Our XPEEM measurements reveal that the Curie temperature () of a bilayer of (CoxFe)GeTe2 (with x = 0.28) reaches ∼300 K—a notable enhancement over most 2D ferromagnets in the ultrathin limit. Interestingly, the shows only a small dependence on film thickness (bulk K), in line with the observed in-plane (IP) magnetic anisotropy and robust IP exchange coupling. XMCD measurements indicate that the spin moments for both Fe and Co are significantly reduced compared to the theoretical values. These insights highlight the potential of Co-doped Fe5GeTe2 for stable, high-temperature ferromagnetic applications in 2D materials.

Discovery of an Antiferromagnetic Topological Nodal-line Kondo Semimetal

ArXiv 2411.13898 (2024)

Authors:

DF Liu, YF Xu, HY Hu, JY Liu, TP Ying, YY Lv, Y Jiang, C Chen, YH Yang, D Pei, D Prabhakaran, MH Gao, JJ Wang, QH Zhang, FQ Meng, B Thiagarajan, C Polley, M Hashimoto, DH Lu, NBM Schröter, VN Strocov, A Louat, C Cacho, D Biswas, T-L Lee, P Steadman, P Bencok, YB Chen, L Gu, T Hesjedal, G van der Laan, H Hosono, LX Yang, ZK Liu, HQ Yuan, BA Bernevig, YL Chen

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