Incommensurate magnetic orders and topological Hall effect in the square-net centrosymmetric EuGa2Al2 system

Jaime M. Moya; Shiming Lei; Eleanor M. Clements; Caitlin S. Kengle; Stella Sun; Kevin Allen; Qizhi Li; Y. Y. Peng; Ali A. Husain; Matteo Mitrano; Matthew J. Krogstad; Raymond Osborn; Anand B. Puthirath; Songxue Chi; L. Debeer-Schmitt; J. Gaudet; P. Abbamonte; Jeffrey W. Lynn; E. Morosan

doi:10.1103/PhysRevMaterials.6.074201

Incommensurate magnetic orders and topological Hall effect in the square-net centrosymmetric EuGa2Al2 system

Jaime M. Moya
, Shiming Lei
, Eleanor M. Clements
, Caitlin S. Kengle
, Stella Sun
, Kevin Allen
, Qizhi Li
, Y. Y. Peng
, Ali A. Husain
, Matteo Mitrano
, Matthew J. Krogstad
, Raymond Osborn
, Anand B. Puthirath
, Songxue Chi
, L. Debeer-Schmitt
, J. Gaudet
, P. Abbamonte
, Jeffrey W. Lynn
, E. Morosan

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

39 Scopus citations

Abstract

Neutron diffraction on the centrosymmetric square-net magnet EuGa2Al2 reveals multiple incommensurate magnetic states (AFM1, 2, 3) in zero field. In applied field, a new magnetic phase (A) is identified from magnetization and transport measurements, bounded by two of the μ0H=0 incommensurate magnetic phases (AFM1, helical, and AFM3, cycloidal) with different moment orientations. Moreover, magnetotransport measurements indicate the presence of a topological Hall effect, with maximum values centered in the A phase. Together, these results render EuGa2Al2 a material with noncoplanar or topological spin texture in applied field. X-ray diffraction reveals an out-of-plane (OOP) charge density wave (CDW) below TCDW∼50 K while the magnetic propagation vector lies in plane below TN=19.5 K. Together these data point to a new route to realizing in-plane noncollinear spin textures through an OOP CDW. In turn, these noncollinear spin textures may be unstable against the formation of topological spin textures in an applied field.

Original language	English
Article number	074201
Journal	Physical Review Materials
Volume	6
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevMaterials.6.074201
State	Published - Jul 2022

Funding

J.M.M. was supported by the National Science Foundation (NSF) Graduate Research Fellowship under Grant No. DGE 1842494. E.M. and S.L. acknowledge support from U.S. DOE BES, Grant No. DE-SC0019503. K.J.A. was supported by NSF Grant No. DMR 1903741. XRD measurements were supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Grant No. DE-FG02-06ER46285. P.A. acknowledges the Gordon and Betty Moore Foundation's EPiQS Initiative through Grant No. GBMF9452. This research used resources at the High Flux Isotope Reactor, Oak Ridge National Laboratory, and the Advanced Photon Source, Argonne National Laboratory, which are DOE Office of Science User Facilities supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. Work at the Materials Science Division, Argonne National Laboratory (single-crystal diffuse x-ray scattering), was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division. The use of the EPMA facility at the Department of Earth Science, Rice University, Houston, Texas, is kindly acknowledged. The identification of any commercial product or trade name does not imply endorsement or recommendation by the National Institute of Standards and Technology.

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10.1103/PhysRevMaterials.6.074201

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Moya, J. M., Lei, S., Clements, E. M., Kengle, C. S., Sun, S., Allen, K., Li, Q., Peng, Y. Y., Husain, A. A., Mitrano, M., Krogstad, M. J., Osborn, R., Puthirath, A. B., Chi, S., Debeer-Schmitt, L., Gaudet, J., Abbamonte, P., Lynn, J. W., & Morosan, E. (2022). Incommensurate magnetic orders and topological Hall effect in the square-net centrosymmetric EuGa2Al2 system. Physical Review Materials, 6(7), Article 074201. https://doi.org/10.1103/PhysRevMaterials.6.074201

@article{d2184f3e9e4e479e9577695a1525a2a5,

title = "Incommensurate magnetic orders and topological Hall effect in the square-net centrosymmetric EuGa2Al2 system",

abstract = "Neutron diffraction on the centrosymmetric square-net magnet EuGa2Al2 reveals multiple incommensurate magnetic states (AFM1, 2, 3) in zero field. In applied field, a new magnetic phase (A) is identified from magnetization and transport measurements, bounded by two of the μ0H=0 incommensurate magnetic phases (AFM1, helical, and AFM3, cycloidal) with different moment orientations. Moreover, magnetotransport measurements indicate the presence of a topological Hall effect, with maximum values centered in the A phase. Together, these results render EuGa2Al2 a material with noncoplanar or topological spin texture in applied field. X-ray diffraction reveals an out-of-plane (OOP) charge density wave (CDW) below TCDW∼50 K while the magnetic propagation vector lies in plane below TN=19.5 K. Together these data point to a new route to realizing in-plane noncollinear spin textures through an OOP CDW. In turn, these noncollinear spin textures may be unstable against the formation of topological spin textures in an applied field.",

author = "Moya, \{Jaime M.\} and Shiming Lei and Clements, \{Eleanor M.\} and Kengle, \{Caitlin S.\} and Stella Sun and Kevin Allen and Qizhi Li and Peng, \{Y. Y.\} and Husain, \{Ali A.\} and Matteo Mitrano and Krogstad, \{Matthew J.\} and Raymond Osborn and Puthirath, \{Anand B.\} and Songxue Chi and L. Debeer-Schmitt and J. Gaudet and P. Abbamonte and Lynn, \{Jeffrey W.\} and E. Morosan",

note = "Publisher Copyright: {\textcopyright} 2022 American Physical Society.",

year = "2022",

month = jul,

doi = "10.1103/PhysRevMaterials.6.074201",

language = "English",

volume = "6",

journal = "Physical Review Materials",

issn = "2475-9953",

publisher = "American Physical Society",

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Moya, JM, Lei, S, Clements, EM, Kengle, CS, Sun, S, Allen, K, Li, Q, Peng, YY, Husain, AA, Mitrano, M, Krogstad, MJ, Osborn, R, Puthirath, AB, Chi, S , Debeer-Schmitt, L, Gaudet, J, Abbamonte, P, Lynn, JW & Morosan, E 2022, 'Incommensurate magnetic orders and topological Hall effect in the square-net centrosymmetric EuGa2Al2 system', Physical Review Materials, vol. 6, no. 7, 074201. https://doi.org/10.1103/PhysRevMaterials.6.074201

TY - JOUR

T1 - Incommensurate magnetic orders and topological Hall effect in the square-net centrosymmetric EuGa2Al2 system

AU - Moya, Jaime M.

AU - Lei, Shiming

AU - Clements, Eleanor M.

AU - Kengle, Caitlin S.

AU - Sun, Stella

AU - Allen, Kevin

AU - Li, Qizhi

AU - Peng, Y. Y.

AU - Husain, Ali A.

AU - Mitrano, Matteo

AU - Krogstad, Matthew J.

AU - Osborn, Raymond

AU - Puthirath, Anand B.

AU - Chi, Songxue

AU - Debeer-Schmitt, L.

AU - Gaudet, J.

AU - Abbamonte, P.

AU - Lynn, Jeffrey W.

AU - Morosan, E.

PY - 2022/7

Y1 - 2022/7

N2 - Neutron diffraction on the centrosymmetric square-net magnet EuGa2Al2 reveals multiple incommensurate magnetic states (AFM1, 2, 3) in zero field. In applied field, a new magnetic phase (A) is identified from magnetization and transport measurements, bounded by two of the μ0H=0 incommensurate magnetic phases (AFM1, helical, and AFM3, cycloidal) with different moment orientations. Moreover, magnetotransport measurements indicate the presence of a topological Hall effect, with maximum values centered in the A phase. Together, these results render EuGa2Al2 a material with noncoplanar or topological spin texture in applied field. X-ray diffraction reveals an out-of-plane (OOP) charge density wave (CDW) below TCDW∼50 K while the magnetic propagation vector lies in plane below TN=19.5 K. Together these data point to a new route to realizing in-plane noncollinear spin textures through an OOP CDW. In turn, these noncollinear spin textures may be unstable against the formation of topological spin textures in an applied field.

AB - Neutron diffraction on the centrosymmetric square-net magnet EuGa2Al2 reveals multiple incommensurate magnetic states (AFM1, 2, 3) in zero field. In applied field, a new magnetic phase (A) is identified from magnetization and transport measurements, bounded by two of the μ0H=0 incommensurate magnetic phases (AFM1, helical, and AFM3, cycloidal) with different moment orientations. Moreover, magnetotransport measurements indicate the presence of a topological Hall effect, with maximum values centered in the A phase. Together, these results render EuGa2Al2 a material with noncoplanar or topological spin texture in applied field. X-ray diffraction reveals an out-of-plane (OOP) charge density wave (CDW) below TCDW∼50 K while the magnetic propagation vector lies in plane below TN=19.5 K. Together these data point to a new route to realizing in-plane noncollinear spin textures through an OOP CDW. In turn, these noncollinear spin textures may be unstable against the formation of topological spin textures in an applied field.

UR - https://www.scopus.com/pages/publications/85135688245

U2 - 10.1103/PhysRevMaterials.6.074201

DO - 10.1103/PhysRevMaterials.6.074201

M3 - Article

AN - SCOPUS:85135688245

SN - 2475-9953

VL - 6

JO - Physical Review Materials

JF - Physical Review Materials

IS - 7

M1 - 074201

ER -

Incommensurate magnetic orders and topological Hall effect in the square-net centrosymmetric EuGa2Al2 system

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