Gaining growing attention in spintronics is a class of magnets displaying zero net magnetization and spin-split electronic bands called altermagnets. Here, by combining density functional theory and symmetry analysis, we show that RuF4 monolayer is a two-dimensional (2D) d-wave altermagnet. Spin–orbit coupling leads to pronounced spin splitting of the electronic bands at the Γpoint by ∼100meVandturns the RuF4 into a weak ferromagnet due to nontrivial spin-momentum locking that cants the Ru magnetic moments. The net magnetic moment scales linearly with the spin–orbit coupling strength. Using group theory we derive an effective spin Hamiltonian capturing the spin-splitting and spin-momentum locking of the electronic bands. Disentanglement of the altermagnetic and spin–orbit coupling induced spin splitting uncovers to which extent the altermagnetic properties are affected by the spin–orbit coupling. Our results move the spotlight to the nontrivial spin-momentum locking and weak ferromagne...tism in the 2D altermagnets relevant for novel venues in this emerging field of material science research.
Извор:
2D Materials, 2024, 11, 3, 035025-
Финансирање / пројекти:
Italian Ministry for Research and Education through the Nanoscience Foundries and Fine Analysis [project “SORBET: Spin-ORBit Effects in Two-dimensional magnets” (IT MIUR Grant No. 2022ZY8HJY]
Ministry of Education, Science, and Technological Development of the Republic of Serbia
Horizon 2020 [Programme SASPRO 2 COFUND Marie Sklodowska-Curie Grant Agreement No. 945478]
Slovak Research and Development Agency [Contract No.SK-SRB-23-0033]
Ministryof Education, Science, Research and Sport of the Slovak Republic provided [Grant No. VEGA1/0695/23]
Slovak Academy of Sciences [project IMPULZ IM-2021-42 and project FLAG ERA JTC 2021 2DSOTECH]
TY - JOUR
AU - Milivojević, Marko
AU - Orozović, Marko
AU - Picozzi, Silvia
AU - Gmitra, Martin
AU - Stavrić, Srđan
PY - 2024
UR - https://vinar.vin.bg.ac.rs/handle/123456789/13281
AB - Gaining growing attention in spintronics is a class of magnets displaying zero net magnetization and spin-split electronic bands called altermagnets. Here, by combining density functional theory and symmetry analysis, we show that RuF4 monolayer is a two-dimensional (2D) d-wave altermagnet. Spin–orbit coupling leads to pronounced spin splitting of the electronic bands at the Γpoint by ∼100meVandturns the RuF4 into a weak ferromagnet due to nontrivial spin-momentum locking that cants the Ru magnetic moments. The net magnetic moment scales linearly with the spin–orbit coupling strength. Using group theory we derive an effective spin Hamiltonian capturing the spin-splitting and spin-momentum locking of the electronic bands. Disentanglement of the altermagnetic and spin–orbit coupling induced spin splitting uncovers to which extent the altermagnetic properties are affected by the spin–orbit coupling. Our results move the spotlight to the nontrivial spin-momentum locking and weak ferromagnetism in the 2D altermagnets relevant for novel venues in this emerging field of material science research.
T2 - 2D Materials
T1 - Interplay of altermagnetism and weak ferromagnetism in two-dimensional RuF4
VL - 11
IS - 3
SP - 035025
DO - 10.1088/2053-1583/ad4c73
ER -
@article{
author = "Milivojević, Marko and Orozović, Marko and Picozzi, Silvia and Gmitra, Martin and Stavrić, Srđan",
year = "2024",
abstract = "Gaining growing attention in spintronics is a class of magnets displaying zero net magnetization and spin-split electronic bands called altermagnets. Here, by combining density functional theory and symmetry analysis, we show that RuF4 monolayer is a two-dimensional (2D) d-wave altermagnet. Spin–orbit coupling leads to pronounced spin splitting of the electronic bands at the Γpoint by ∼100meVandturns the RuF4 into a weak ferromagnet due to nontrivial spin-momentum locking that cants the Ru magnetic moments. The net magnetic moment scales linearly with the spin–orbit coupling strength. Using group theory we derive an effective spin Hamiltonian capturing the spin-splitting and spin-momentum locking of the electronic bands. Disentanglement of the altermagnetic and spin–orbit coupling induced spin splitting uncovers to which extent the altermagnetic properties are affected by the spin–orbit coupling. Our results move the spotlight to the nontrivial spin-momentum locking and weak ferromagnetism in the 2D altermagnets relevant for novel venues in this emerging field of material science research.",
journal = "2D Materials",
title = "Interplay of altermagnetism and weak ferromagnetism in two-dimensional RuF4",
volume = "11",
number = "3",
pages = "035025",
doi = "10.1088/2053-1583/ad4c73"
}
Milivojević, M., Orozović, M., Picozzi, S., Gmitra, M.,& Stavrić, S.. (2024). Interplay of altermagnetism and weak ferromagnetism in two-dimensional RuF4. in 2D Materials, 11(3), 035025.
https://doi.org/10.1088/2053-1583/ad4c73
Milivojević M, Orozović M, Picozzi S, Gmitra M, Stavrić S. Interplay of altermagnetism and weak ferromagnetism in two-dimensional RuF4. in 2D Materials. 2024;11(3):035025.
doi:10.1088/2053-1583/ad4c73 .
Milivojević, Marko, Orozović, Marko, Picozzi, Silvia, Gmitra, Martin, Stavrić, Srđan, "Interplay of altermagnetism and weak ferromagnetism in two-dimensional RuF4" in 2D Materials, 11, no. 3 (2024):035025,
https://doi.org/10.1088/2053-1583/ad4c73 . .
