Magnetic phases of skyrmion-hosting GaV4S8−ySey (y = 0, 2, 4, 8) probed with muon spectroscopy

Franke, Kévin J.A.; Huddart, Benjamin M.; Hicken, Thomas J.; Xiao, Fan; Blundell, Stephen J.; Pratt, Francis L.; Crisanti, Marta; Barker, Joel A.T.; Clark, Stewart J.; Štefančič, Aleš; Hatnean, Monica Ciomaga; Balakrishnan, Geetha; Lancaster, Tom

doi:10.1103/physrevb.98.054428

Magnetic phases of skyrmion-hosting GaV4S8−ySey (y = 0, 2, 4, 8) probed with muon spectroscopy

Franke, Kévin J.A.; Huddart, Benjamin M.; Hicken, Thomas J.; Xiao, Fan; Blundell, Stephen J.; Pratt, Francis L.; Crisanti, Marta; Barker, Joel A.T.; Clark, Stewart J.; Štefančič, Aleš; Hatnean, Monica Ciomaga; Balakrishnan, Geetha; Lancaster, Tom

Authors

Kévin J.A. Franke

Benjamin Huddart benjamin.m.huddart@durham.ac.uk
Academic Visitor

Thomas James Hicken thomas.j.hicken@durham.ac.uk
PGR Student Doctor of Philosophy

Fan Xiao

Stephen J. Blundell

Francis L. Pratt

Marta Crisanti

Joel A.T. Barker

Professor Stewart Clark s.j.clark@durham.ac.uk
Professor

Aleš Štefančič

Monica Ciomaga Hatnean

Geetha Balakrishnan

Professor Tom Lancaster tom.lancaster@durham.ac.uk
Professor

Abstract

We present the results of a muon-spin spectroscopy investigation of GaV4S8−ySey with y = 0, 2, 4, and 8. Zero-field measurements suggest that GaV4Se8 and GaV4S8 have distinct magnetic ground states, with the latter material showing an anomalous temperature dependence of the local magnetic field. It is not possible to evolve the magnetic state continuously between these two systems, with the intermediate y = 2 and 4 materials showing glassy magnetic behavior at low temperature. The skyrmion lattice (SkL) phase is evident in the y = 0 and 8 materials through an enhanced response of the muon-spin relaxation to the emergent dynamics that accompany the SkL. For our polycrystalline samples of GaV4Se8, this enhanced dynamic response is confined to a smaller region of the magnetic field-temperature phase diagram than the previous reports of the SkL in single crystals.

Citation

Franke, K. J., Huddart, B. M., Hicken, T. J., Xiao, F., Blundell, S. J., Pratt, F. L., …Lancaster, T. (2018). Magnetic phases of skyrmion-hosting GaV4S8−ySey (y = 0, 2, 4, 8) probed with muon spectroscopy. Physical Review B, 98(5), Article 054428. https://doi.org/10.1103/physrevb.98.054428

Journal Article Type	Article
Acceptance Date	Aug 2, 2018
Online Publication Date	Aug 27, 2018
Publication Date	Aug 27, 2018
Deposit Date	Sep 7, 2018
Publicly Available Date	Sep 13, 2018
Journal	Physical Review B
Print ISSN	2469-9950
Electronic ISSN	2469-9969
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	98
Issue	5
Article Number	054428
DOI	https://doi.org/10.1103/physrevb.98.054428

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Copyright Statement
Reprinted with permission from the American Physical Society: Franke, Kévin J. A., Huddart, Benjamin M., Hicken, Thomas J., Xiao, Fan, Blundell, Stephen J., Pratt, Francis L., Crisanti, Marta, Barker, Joel A. T., Clark, Stewart J., Štefančič, Aleš, Hatnean, Monica Ciomaga, Balakrishnan, Geetha & Lancaster, Tom (2018). Magnetic phases of skyrmion-hosting GaV4S8−ySey (y = 0, 2, 4, 8) probed with muon spectroscopy. Physical Review B 98(5): 054428. © (2018) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.