Squeezing the periodicity of Néel-type magnetic modulations by enhanced Dzyaloshinskii-Moriya interaction of 4d electrons

Ádám Butykai; Korbinian Geirhos; Dávid Szaller; László F. Kiss; László Balogh; Maria Azhar; Markus Garst; Lisa DeBeer-Schmitt; Takeshi Waki; Yoshikazu Tabata; Hiroyuki Nakamura; István Kézsmárki; Sándor Bordács

doi:10.1038/s41535-022-00432-y

Squeezing the periodicity of Néel-type magnetic modulations by enhanced Dzyaloshinskii-Moriya interaction of 4d electrons

Ádám Butykai, Korbinian Geirhos, Dávid Szaller, László F. Kiss, László Balogh, Maria Azhar, Markus Garst, Lisa DeBeer-Schmitt, Takeshi Waki, Yoshikazu Tabata, Hiroyuki Nakamura, István Kézsmárki, Sándor Bordács

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Abstract

In polar magnets, such as GaV₄S₈, GaV₄Se₈ and VOSe₂O₅, modulated magnetic phases namely the cycloidal and the Néel-type skyrmion lattice states were identified over extended temperature ranges, even down to zero Kelvin. Our combined small-angle neutron scattering and magnetization study shows the robustness of the Néel-type magnetic modulations also against magnetic fields up to 2 T in the polar GaMo₄S₈. In addition to the large upper critical field, enhanced spin-orbit coupling stabilize cycloidal, Néel skyrmion lattice phases with sub-10 nm periodicity and a peculiar distribution of the magnetic modulation vectors. Moreover, we detected an additional single-q state not observed in any other polar magnets. Thus, our work demonstrates that non-centrosymmetric magnets with 4d and 5d electron systems may give rise to various highly compressed modulated states.

Original language	English
Article number	26
Journal	npj Quantum Materials
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41535-022-00432-y
State	Published - Dec 2022

Funding

We thank S. Picozzi, and S. Dong for useful discussions. This work was supported by the Deutsche Forschungsgemeinschaft (DFG) via the Transregional Research Collaboration TRR 80: From Electronic Correlations to Functionality (Augsburg-Munich-Stuttgart) and via the DFG Priority Program SPP2137, Skyrmionics, under Grant No. KE 2370/1-1. M.G. is supported by DFG through project A07 of SFB 1143 (project-ID 247310070), DFG projects No. 270344603 and 324327023. S.B. acknowledges support by National Research, Development and Innovation Office - NKFIH, FK 153003, Bolyai 00318/20/11 and by the BME-Nanotechnology and Materials Science FIKP grant of EMMI (BME FIKP-NAT). This research was supported by the Ministry of Innovation and Technology and the National Research, Development and Innovation Office within the Quantum Information National Laboratory of Hungary. D.S. acknowledges the FWF Austrian Science Fund Grants No. I 2816-N27 and TAI 334-N. This research used resources at the High Flux Isotope Reactor, a Department of Energy (DOE) Office of Science User Facility operated by the Oak Ridge National Laboratory. We thank S. Picozzi, and S. Dong for useful discussions. This work was supported by the Deutsche Forschungsgemeinschaft (DFG) via the Transregional Research Collaboration TRR 80: From Electronic Correlations to Functionality (Augsburg-Munich-Stuttgart) and via the DFG Priority Program SPP2137, Skyrmionics, under Grant No. KE 2370/1-1. M.G. is supported by DFG through project A07 of SFB 1143 (project-ID 247310070), DFG projects No. 270344603 and 324327023. S.B. acknowledges support by National Research, Development and Innovation Office - NKFIH, FK 153003, Bolyai 00318/20/11 and by the BME-Nanotechnology and Materials Science FIKP grant of EMMI (BME FIKP-NAT). This research was supported by the Ministry of Innovation and Technology and the National Research, Development and Innovation Office within the Quantum Information National Laboratory of Hungary. D.S. acknowledges the FWF Austrian Science Fund Grants No. I 2816-N27 and TAI 334-N. This research used resources at the High Flux Isotope Reactor, a Department of Energy (DOE) Office of Science User Facility operated by the Oak Ridge National Laboratory.

Funders	Funder number
BME-Nanotechnology
Quantum Information National Laboratory of Hungary
U.S. Department of Energy
Office of Science
Oak Ridge National Laboratory
Budapesti Műszaki és Gazdaságtudományi Egyetem
Deutsche Forschungsgemeinschaft	KE 2370/1-1, SPP2137, 270344603, 324327023, 247310070, SFB 1143
Austrian Science Fund	2816-N27, TAI 334-N
Emberi Eroforrások Minisztériuma
Nemzeti Kutatási Fejlesztési és Innovációs Hivatal	00318/20/11, FK 153003
Innovációs és Technológiai Minisztérium
National Research, Development and Innovation Office

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Butykai, Á., Geirhos, K., Szaller, D., Kiss, L. F., Balogh, L., Azhar, M., Garst, M., DeBeer-Schmitt, L., Waki, T., Tabata, Y., Nakamura, H., Kézsmárki, I., & Bordács, S. (2022). Squeezing the periodicity of Néel-type magnetic modulations by enhanced Dzyaloshinskii-Moriya interaction of 4d electrons. npj Quantum Materials, 7(1), Article 26. https://doi.org/10.1038/s41535-022-00432-y

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title = "Squeezing the periodicity of N{\'e}el-type magnetic modulations by enhanced Dzyaloshinskii-Moriya interaction of 4d electrons",

abstract = "In polar magnets, such as GaV4S8, GaV4Se8 and VOSe2O5, modulated magnetic phases namely the cycloidal and the N{\'e}el-type skyrmion lattice states were identified over extended temperature ranges, even down to zero Kelvin. Our combined small-angle neutron scattering and magnetization study shows the robustness of the N{\'e}el-type magnetic modulations also against magnetic fields up to 2 T in the polar GaMo4S8. In addition to the large upper critical field, enhanced spin-orbit coupling stabilize cycloidal, N{\'e}el skyrmion lattice phases with sub-10 nm periodicity and a peculiar distribution of the magnetic modulation vectors. Moreover, we detected an additional single-q state not observed in any other polar magnets. Thus, our work demonstrates that non-centrosymmetric magnets with 4d and 5d electron systems may give rise to various highly compressed modulated states.",

author = "{\'A}d{\'a}m Butykai and Korbinian Geirhos and D{\'a}vid Szaller and Kiss, {L{\'a}szl{\'o} F.} and L{\'a}szl{\'o} Balogh and Maria Azhar and Markus Garst and Lisa DeBeer-Schmitt and Takeshi Waki and Yoshikazu Tabata and Hiroyuki Nakamura and Istv{\'a}n K{\'e}zsm{\'a}rki and S{\'a}ndor Bord{\'a}cs",

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month = dec,

doi = "10.1038/s41535-022-00432-y",

language = "English",

volume = "7",

journal = "npj Quantum Materials",

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Butykai, Á, Geirhos, K, Szaller, D, Kiss, LF, Balogh, L, Azhar, M, Garst, M, DeBeer-Schmitt, L, Waki, T, Tabata, Y, Nakamura, H, Kézsmárki, I & Bordács, S 2022, 'Squeezing the periodicity of Néel-type magnetic modulations by enhanced Dzyaloshinskii-Moriya interaction of 4d electrons', npj Quantum Materials, vol. 7, no. 1, 26. https://doi.org/10.1038/s41535-022-00432-y

TY - JOUR

T1 - Squeezing the periodicity of Néel-type magnetic modulations by enhanced Dzyaloshinskii-Moriya interaction of 4d electrons

AU - Butykai, Ádám

AU - Geirhos, Korbinian

AU - Szaller, Dávid

AU - Kiss, László F.

AU - Balogh, László

AU - Azhar, Maria

AU - Garst, Markus

AU - DeBeer-Schmitt, Lisa

AU - Waki, Takeshi

AU - Tabata, Yoshikazu

AU - Nakamura, Hiroyuki

AU - Kézsmárki, István

AU - Bordács, Sándor

PY - 2022/12

Y1 - 2022/12

N2 - In polar magnets, such as GaV4S8, GaV4Se8 and VOSe2O5, modulated magnetic phases namely the cycloidal and the Néel-type skyrmion lattice states were identified over extended temperature ranges, even down to zero Kelvin. Our combined small-angle neutron scattering and magnetization study shows the robustness of the Néel-type magnetic modulations also against magnetic fields up to 2 T in the polar GaMo4S8. In addition to the large upper critical field, enhanced spin-orbit coupling stabilize cycloidal, Néel skyrmion lattice phases with sub-10 nm periodicity and a peculiar distribution of the magnetic modulation vectors. Moreover, we detected an additional single-q state not observed in any other polar magnets. Thus, our work demonstrates that non-centrosymmetric magnets with 4d and 5d electron systems may give rise to various highly compressed modulated states.

AB - In polar magnets, such as GaV4S8, GaV4Se8 and VOSe2O5, modulated magnetic phases namely the cycloidal and the Néel-type skyrmion lattice states were identified over extended temperature ranges, even down to zero Kelvin. Our combined small-angle neutron scattering and magnetization study shows the robustness of the Néel-type magnetic modulations also against magnetic fields up to 2 T in the polar GaMo4S8. In addition to the large upper critical field, enhanced spin-orbit coupling stabilize cycloidal, Néel skyrmion lattice phases with sub-10 nm periodicity and a peculiar distribution of the magnetic modulation vectors. Moreover, we detected an additional single-q state not observed in any other polar magnets. Thus, our work demonstrates that non-centrosymmetric magnets with 4d and 5d electron systems may give rise to various highly compressed modulated states.

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ER -

Squeezing the periodicity of Néel-type magnetic modulations by enhanced Dzyaloshinskii-Moriya interaction of 4d electrons

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