Magnetism in the Néel-skyrmion host GaV4S8 under pressure

Hicken, T.J.; Wilson, M.N.; Holt, S.J.R.; Khassanov, R.; Lees, M.R.; Gupta, R.; Das, D.; Balakrishnan, G.; Lancaster, T.

Abstract

We present magnetization and muon-spin spectroscopy measurements of Néel-skyrmion host GaV4S8 under the application of hydrostatic pressures up to P = 2.29 GPa. Our results suggest that the magnetic phase diagram is altered with pressure via a reduction in the crossover temperature from the cycloidal (C) to ferromagnetic-like state with increasing P, such that, by 2.29 GPa, the C state appears to persist down to the lowest measured temperatures. With the aid of micromagnetic simulations, we propose that the driving mechanism behind this change is a reduction in the magnetic anisotropy of the system, and suggest that this could lead to an increase in stability of the skyrmion lattice.

Citation

Hicken, T., Wilson, M., Holt, S., Khassanov, R., Lees, M., Gupta, R., Das, D., Balakrishnan, G., & Lancaster, T. (2022). Magnetism in the Néel-skyrmion host GaV4S8 under pressure. Physical Review B, 105(13), https://doi.org/10.1103/physrevb.105.134414

• Journal Article Type: Article
• Acceptance Date: Mar 23, 2022
• Online Publication Date: Apr 13, 2022
• Publication Date: 2022
• Deposit Date: Apr 14, 2022
• Publicly Available Date: Jun 30, 2022
• Journal: Physical review B: Condensed matter and materials physics
• Print ISSN: 2469-9950
• Electronic ISSN: 2469-9969
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 105
• Issue: 13
• DOI: https://doi.org/10.1103/physrevb.105.134414
• Public URL: https://durham-repository.worktribe.com/output/1207979
• Related Public URLs: https://arxiv.org/abs/2201.12794