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

doi:10.1103/PhysRevB.103.L100410

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

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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 language	English
Article number	100410
Number of pages	5
Journal	Physical Review B
Volume	103
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.103.L100410
Publication status	Published - 19-Mar-2021

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DYNAMICS

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title = "All-electrical detection of skyrmion lattice state and chiral surface twists",

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.",

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author = "A. Aqeel and M. Azhar and N. Vlietstra and A. Pozzi and J. Sahliger and H. Huebl and Palstra, {T. T. M.} and Back, {C. H.} and M. Mostovoy",

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TY - JOUR

T1 - All-electrical detection of skyrmion lattice state and chiral surface twists

AU - Aqeel, A.

AU - Azhar, M.

AU - Vlietstra, N.

AU - Pozzi, A.

AU - Sahliger, J.

AU - Huebl, H.

AU - Palstra, T. T. M.

AU - Back, C. H.

AU - Mostovoy, M.

PY - 2021/3/19

Y1 - 2021/3/19

N2 - 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.

AB - 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.

KW - DYNAMICS

U2 - 10.1103/PhysRevB.103.L100410

DO - 10.1103/PhysRevB.103.L100410

M3 - Article

SN - 2469-9950

VL - 103

JO - Physical Review B

JF - Physical Review B

IS - 10

M1 - 100410

ER -

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

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