Optically Driven Collective Spin Excitations and Magnetization Dynamics in the Néel-type Skyrmion Host GaV4 S8

P. Padmanabhan; F. Sekiguchi; R. B. Versteeg; E. Slivina; V. Tsurkan; S. Bordács; I. Kézsmárki; P. H.M. Van Loosdrecht

doi:10.1103/PhysRevLett.122.107203

Optically Driven Collective Spin Excitations and Magnetization Dynamics in the Néel-type Skyrmion Host GaV4 S8

P. Padmanabhan
, F. Sekiguchi
, R. B. Versteeg
, E. Slivina
, V. Tsurkan
, S. Bordács
, I. Kézsmárki
, P. H.M. Van Loosdrecht

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

GaV4S8 is a multiferroic semiconductor hosting magnetic cycloid (Cyc) and Néel-type skyrmion lattice (SkL) phases with a broad region of thermal and magnetic stability. Here, we use time-resolved magneto-optical Kerr spectroscopy to show the coherent generation of collective spin excitations in the Cyc and SkL phases. Our micromagnetic simulations reveal that these are driven by an optically induced modulation of uniaxial anisotropy. Our results shed light on spin dynamics in anisotropic materials hosting skyrmions and pave a new pathway for the optical manipulation of their magnetic order.

Original language	English
Article number	107203
Journal	Physical Review Letters
Volume	122
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.122.107203
State	Published - Mar 15 2019

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10.1103/PhysRevLett.122.107203

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title = "Optically Driven Collective Spin Excitations and Magnetization Dynamics in the N{\'e}el-type Skyrmion Host GaV4 S8",

abstract = "GaV4S8 is a multiferroic semiconductor hosting magnetic cycloid (Cyc) and N{\'e}el-type skyrmion lattice (SkL) phases with a broad region of thermal and magnetic stability. Here, we use time-resolved magneto-optical Kerr spectroscopy to show the coherent generation of collective spin excitations in the Cyc and SkL phases. Our micromagnetic simulations reveal that these are driven by an optically induced modulation of uniaxial anisotropy. Our results shed light on spin dynamics in anisotropic materials hosting skyrmions and pave a new pathway for the optical manipulation of their magnetic order.",

author = "P. Padmanabhan and F. Sekiguchi and Versteeg, \{R. B.\} and E. Slivina and V. Tsurkan and S. Bord{\'a}cs and I. K{\'e}zsm{\'a}rki and \{Van Loosdrecht\}, \{P. H.M.\}",

year = "2019",

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doi = "10.1103/PhysRevLett.122.107203",

language = "English",

volume = "122",

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T1 - Optically Driven Collective Spin Excitations and Magnetization Dynamics in the Néel-type Skyrmion Host GaV4 S8

AU - Padmanabhan, P.

AU - Sekiguchi, F.

AU - Versteeg, R. B.

AU - Slivina, E.

AU - Tsurkan, V.

AU - Bordács, S.

AU - Kézsmárki, I.

AU - Van Loosdrecht, P. H.M.

PY - 2019/3/15

Y1 - 2019/3/15

N2 - GaV4S8 is a multiferroic semiconductor hosting magnetic cycloid (Cyc) and Néel-type skyrmion lattice (SkL) phases with a broad region of thermal and magnetic stability. Here, we use time-resolved magneto-optical Kerr spectroscopy to show the coherent generation of collective spin excitations in the Cyc and SkL phases. Our micromagnetic simulations reveal that these are driven by an optically induced modulation of uniaxial anisotropy. Our results shed light on spin dynamics in anisotropic materials hosting skyrmions and pave a new pathway for the optical manipulation of their magnetic order.

AB - GaV4S8 is a multiferroic semiconductor hosting magnetic cycloid (Cyc) and Néel-type skyrmion lattice (SkL) phases with a broad region of thermal and magnetic stability. Here, we use time-resolved magneto-optical Kerr spectroscopy to show the coherent generation of collective spin excitations in the Cyc and SkL phases. Our micromagnetic simulations reveal that these are driven by an optically induced modulation of uniaxial anisotropy. Our results shed light on spin dynamics in anisotropic materials hosting skyrmions and pave a new pathway for the optical manipulation of their magnetic order.

UR - https://www.scopus.com/pages/publications/85062983956

U2 - 10.1103/PhysRevLett.122.107203

DO - 10.1103/PhysRevLett.122.107203

M3 - Article

SN - 0031-9007

VL - 122

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

M1 - 107203

ER -

Optically Driven Collective Spin Excitations and Magnetization Dynamics in the Néel-type Skyrmion Host GaV4 S8

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