Outputs (32)

X-Ray Magnetic Circular Dichroism in Altermagnetic α-MnTe (2024)
Journal Article
Hariki, A., Dal Din, A., Amin, O., Yamaguchi, T., Badura, A., Kriegner, D., …Kuneš, J. (2024). X-Ray Magnetic Circular Dichroism in Altermagnetic α-MnTe. Physical Review Letters, 132(17), Article 176701. https://doi.org/10.1103/physrevlett.132.176701

Altermagnetism is a recently identified magnetic symmetry class combining characteristics of conventional collinear ferromagnets and antiferromagnets, that were regarded as mutually exclusive, and enabling phenomena and functionalities unparalleled i... Read More about X-Ray Magnetic Circular Dichroism in Altermagnetic α-MnTe.

Electrical control of 180° domain walls in an antiferromagnet (2023)
Journal Article
Amin, O. J., Reimers, S., Maccherozzi, F., Dhesi, S. S., Novák, V., Campion, R. P., …Wadley, P. (2023). Electrical control of 180° domain walls in an antiferromagnet. APL Materials, 11(9), Article 091112. https://doi.org/10.1063/5.0156508

We demonstrate the reversible current-induced motion of 180° antiferromagnetic domain walls in a CuMnAs device. By controlling the magnitude and direction of the current pulse, the position of a domain wall can be switched between three distinct pinn... Read More about Electrical control of 180° domain walls in an antiferromagnet.

Antiferromagnetic half-skyrmions electrically generated and controlled at room temperature (2023)
Journal Article
Amin, O. J., Poole, S. F., Reimers, S., Barton, L. X., Dal Din, A., Maccherozzi, F., …Wadley, P. (2023). Antiferromagnetic half-skyrmions electrically generated and controlled at room temperature. Nature Nanotechnology, 18(8), 849-853. https://doi.org/10.1038/s41565-023-01386-3

Topologically protected magnetic textures are promising candidates for information carriers in future memory devices, as they can be efficiently propelled at very high velocities using current-induced spin torques. These textures—nanoscale whirls in... Read More about Antiferromagnetic half-skyrmions electrically generated and controlled at room temperature.

Probing the manipulation of antiferromagnetic order in CuMnAs films using neutron diffraction (2022)
Journal Article
Poole, S. F., Barton, L. X., Wang, M., Manuel, P., Khalyavin, D., Langridge, S., …Wadley, P. (2022). Probing the manipulation of antiferromagnetic order in CuMnAs films using neutron diffraction. Applied Physics Letters, 121(5), Article 052402. https://doi.org/10.1063/5.0103390

We describe measurements of the uniaxial magnetic anisotropy and spin-flop rotation of the Néel vector in antiferromagnetic CuMnAs thin films using neutron diffraction. The suppression of the magnetic (100) peak under magnetic fields is observed for... Read More about Probing the manipulation of antiferromagnetic order in CuMnAs films using neutron diffraction.

Atomically sharp domain walls in an antiferromagnet (2022)
Journal Article
Krizek, F., Reimers, S., Kašpar, Z., Marmodoro, A., Michalička, J., Man, O., …Jungwirth, T. (2022). Atomically sharp domain walls in an antiferromagnet. Science Advances, 8(13), https://doi.org/10.1126/sciadv.abn3535

The interest in understanding scaling limits of magnetic textures such as domain walls spans the entire field of magnetism from its physical fundamentals to applications in information technologies. Here, we explore antiferromagnetic CuMnAs in which... Read More about Atomically sharp domain walls in an antiferromagnet.

Defect-driven antiferromagnetic domain walls in CuMnAs films (2022)
Journal Article
Reimers, S., Kriegner, D., Gomonay, O., Carbone, D., Krizek, F., Novák, V., …Edmonds, K. W. (2022). Defect-driven antiferromagnetic domain walls in CuMnAs films. Nature Communications, 13(1), Article 724. https://doi.org/10.1038/s41467-022-28311-x

Efficient manipulation of antiferromagnetic (AF) domains and domain walls has opened up new avenues of research towards ultrafast, high-density spintronic devices. AF domain structures are known to be sensitive to magnetoelastic effects, but the micr... Read More about Defect-driven antiferromagnetic domain walls in CuMnAs films.

Magnetism and magnetoresistance in the critical region of a dilute ferromagnet (2021)
Journal Article
Wang, M., Howells, B., Marshall, R. A., Taylor, J. M., Edmonds, K. W., Rushforth, A. W., …Gallagher, B. L. (2021). Magnetism and magnetoresistance in the critical region of a dilute ferromagnet. Scientific Reports, 11, Article 2300. https://doi.org/10.1038/s41598-021-81893-2

We present detailed experimental measurements and simulations of the field-dependent magnetization and magnetoresistance in the vicinity of the Curie temperature in the highly disordered dilute ferromagnetic semiconductor (Ga,Mn)As. The observed depe... Read More about Magnetism and magnetoresistance in the critical region of a dilute ferromagnet.

Quenching of an antiferromagnet into high resistivity states using electrical or ultrashort optical pulses (2020)
Journal Article
Kašpar, Z., Surýnek, M., Zubáč, J., Krizek, F., Novák, V., Campion, R. P., …Jungwirth, T. (2021). Quenching of an antiferromagnet into high resistivity states using electrical or ultrashort optical pulses. Nature Electronics, 4(1), 30-37. https://doi.org/10.1038/s41928-020-00506-4

Antiferromagnets are of potential use in the development of spintronic devices due to their ultrafast dynamics, insensitivity to external magnetic fields and absence of magnetic stray fields. Similar to their ferromagnetic counterparts, antiferromagn... Read More about Quenching of an antiferromagnet into high resistivity states using electrical or ultrashort optical pulses.

Magneto-Seebeck microscopy of domain switching in collinear antiferromagnet CuMnAs (2020)
Journal Article
Janda, T., Godinho, J., Ostatnicky, T., Pfitzner, E., Ulrich, G., Hoehl, A., …Wunderlich, J. (2020). Magneto-Seebeck microscopy of domain switching in collinear antiferromagnet CuMnAs. Physical Review Materials, 4(9), Article 094413. https://doi.org/10.1103/physrevmaterials.4.094413

Antiferromagnets offer spintronic device characteristics unparalleled in ferromagnets owing to their lack of stray fields, THz spin dynamics, and rich materials landscape. Microscopic imaging of antiferromagnetic domains is one of the key prerequisit... Read More about Magneto-Seebeck microscopy of domain switching in collinear antiferromagnet CuMnAs.

Low-energy switching of antiferromagnetic CuMnAs/GaP using sub-10 nanosecond current pulses (2020)
Journal Article
Omari, K. A., Barton, L. X., Amin, O., Campion, R. P., Rushforth, A. W., Kent, A. J., …Edmonds, K. W. (2020). Low-energy switching of antiferromagnetic CuMnAs/GaP using sub-10 nanosecond current pulses. Journal of Applied Physics, 127(19), Article 193906. https://doi.org/10.1063/5.0006183

The recently discovered electrical-induced switching of antiferromagnetic (AF) materials that have spatial inversion asymmetry has enriched the field of spintronics immensely and opened the door for the concept of antiferromagnetic memory devices. Cu... Read More about Low-energy switching of antiferromagnetic CuMnAs/GaP using sub-10 nanosecond current pulses.