All-electrical detection of skyrmion lattice state and chiral surface twists

A. Aqeel*, M. Azhar, N. Vlietstra, A. Pozzi, J. Sahliger, H. Huebl, T. T. M. Palstra, C. H. Back, M. Mostovoy

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)
52 Downloads (Pure)

Abstract

We study the high-temperature phase diagram of the chiral magnetic insulator Cu2OSeO3 by measuring the spin-Hall magnetoresistance (SMR) in a thin Pt electrode. We find distinct changes in the phase and amplitude of the SMR signal at critical lines separating different magnetic phases of bulk Cu2OSeO3. The skyrmion lattice state appears as a strong dip in the SMR phase. A strong enhancement of the SMR amplitude is observed in the conical spiral state, which we explain by an additional symmetry-allowed contribution to the SMR present in noncollinear magnets. We demonstrate that the SMR can be used as an all-electrical probe of chiral surface twists and skyrmions in magnetic insulators.

Original languageEnglish
Article number100410
Number of pages5
JournalPhysical Review B
Volume103
Issue number10
DOIs
Publication statusPublished - 19-Mar-2021

Keywords

  • DYNAMICS

Cite this