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Resonance of terahertz phonons in an acoustic nanocavity (2018)
Journal Article
Sandeep, S., Heywood, S. L., Campion, R. P., Kent, A. J., & Kini, R. N. (2018). Resonance of terahertz phonons in an acoustic nanocavity. Physical Review B, 98(23), Article 235303. https://doi.org/10.1103/physrevb.98.235303

We show the resonant behavior of ∼0.5-THz longitudinal acoustic (LA) phonons in an acoustic nanocavity of thickness ∼28 nm sandwiched between two GaAs/AlAs superlattices (SLs). One of the SLs, upon excitation with an ultrafast optical pulse, acts as... Read More about Resonance of terahertz phonons in an acoustic nanocavity.

Electrically induced and detected Néel vector reversal in a collinear antiferromagnet (2018)
Journal Article
Godinho, J., Reichlová, H., Kriegner, D., Novák, V., Olejník, K., Kašpar, Z., …Wunderlich, J. (2018). Electrically induced and detected Néel vector reversal in a collinear antiferromagnet. Nature Communications, 9(1), Article 4686. https://doi.org/10.1038/s41467-018-07092-2

© 2018, The Author(s). Antiferromagnets are enriching spintronics research by many favorable properties that include insensitivity to magnetic fields, neuromorphic memory characteristics, and ultra-fast spin dynamics. Designing memory devices with el... Read More about Electrically induced and detected Néel vector reversal in a collinear antiferromagnet.

A high electron mobility phonotransistor (2018)
Journal Article
Poyser, C. L., Li, L. H., Campion, R. P., Akimov, A. V., Linfield, E. H., Davies, A. G., …Kent, A. J. (2018). A high electron mobility phonotransistor. Communications Physics, 1, 1-7. https://doi.org/10.1038/s42005-018-0059-7

Acoustoelectric devices convert acoustic energy to electrical energy and vice versa. Devices working at much higher acoustic frequencies than those currently available have potential scientific and technological applications, e.g.: as detectors in ph... Read More about A high electron mobility phonotransistor.

Current polarity-dependent manipulation of antiferromagnetic domains (2018)
Journal Article
Wadley, P., Reimers, S., Grzybowski, M. J., Andrews, C., Wang, M., Chauhan, J., …Jungwirth, T. (2018). Current polarity-dependent manipulation of antiferromagnetic domains. Nature Nanotechnology, 13(5), 362-365. https://doi.org/10.1038/s41565-018-0079-1

Antiferromagnets have several favourable properties as active elements in spintronic devices, including ultra-fast dynamics, zero stray fields and insensitivity to external magnetic fields. Tetragonal CuMnAs is a testbed system in which the antiferro... Read More about Current polarity-dependent manipulation of antiferromagnetic domains.

Terahertz electrical writing speed in an antiferromagnetic memory (2018)
Journal Article
Olejník, K., Seifert, T., Kašpar, Z., Novák, V., Wadley, P., Campion, R. P., …Jungwirth, T. (2018). Terahertz electrical writing speed in an antiferromagnetic memory. Science Advances, 4(3), Article eaar3566. https://doi.org/10.1126/sciadv.aar3566

© 2018 American Association for the Advancement of Science. All rights reserved. The speed of writing of state-of-the-art ferromagnetic memories is physically limited by an intrinsic gigahertz threshold. Recently, realization of memory devices based... Read More about Terahertz electrical writing speed in an antiferromagnetic memory.

Switching the uniaxial magnetic anisotropy by ion irradiation induced compensation (2018)
Journal Article
Yuan, Y., Amarouche, T., Xu, C., Rushforth, A., Böttger, R., Edmonds, K., …Zhou, S. (2018). Switching the uniaxial magnetic anisotropy by ion irradiation induced compensation. Journal of Physics D: Applied Physics, 51(14), https://doi.org/10.1088/1361-6463/aab1db

© 2018 IOP Publishing Ltd. In the present work, the uniaxial magnetic anisotropy of GaMnAsP is modified by helium ion irradiation. According to the micro-magnetic parameters, e.g. resonance fields and anisotropy constants deduced from ferromagnetic r... Read More about Switching the uniaxial magnetic anisotropy by ion irradiation induced compensation.