Spirals and skyrmions in antiferromagnetic triangular lattices
We study realizations of spirals and skyrmions in two-dimensional antiferromagnets with a triangular lattice on an inversion-symmetry-breaking substrate. As a possible material realization, we investigate the adsorption of transition-metal atoms (Cr, Mn, Fe, or Co) on a monolayer of MoS\(_2\), WS\(_...
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| creator | Fang, Wuzhang Raeliarijaona, Aldo Po-Hao, Chang Kovalev, Alexey A Belashchenko, Kirill D |
| description | We study realizations of spirals and skyrmions in two-dimensional antiferromagnets with a triangular lattice on an inversion-symmetry-breaking substrate. As a possible material realization, we investigate the adsorption of transition-metal atoms (Cr, Mn, Fe, or Co) on a monolayer of MoS\(_2\), WS\(_2\), or WSe\(_2\) and obtain the exchange, anisotropy, and Dzyaloshinskii-Moriya interaction parameters using first-principles calculations. Using energy minimization and parallel-tempering Monte-Carlo simulations, we determine the magnetic phase diagrams for a wide range of interaction parameters. We find that skyrmion lattices can appear even with weak Dzyaloshinskii-Moriya interactions, but their stability is hindered by magnetic anisotropy. However, a weak easy plane magnetic anisotropy can be beneficial for stabilizing the skyrmion phase. Our results suggest that Cr\(/\)MoS\(_2\), Fe\(/\)MoS\(_2\), and Fe\(/\)WSe\(_2\) interfaces can host spin spirals formed from the 120\(^{\circ}\) antiferromagnetic states. Our results further suggests that for other interfaces, such as Fe\(/\)MoS\(_2\), the Dzyaloshinskii-Moriya interaction is strong enough to drive the system into a three-sublattice skyrmion lattice in the presence of experimentally feasible external magnetic field. |
| doi_str_mv | 10.48550/arxiv.2102.11246 |
| format | Article |
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As a possible material realization, we investigate the adsorption of transition-metal atoms (Cr, Mn, Fe, or Co) on a monolayer of MoS\(_2\), WS\(_2\), or WSe\(_2\) and obtain the exchange, anisotropy, and Dzyaloshinskii-Moriya interaction parameters using first-principles calculations. Using energy minimization and parallel-tempering Monte-Carlo simulations, we determine the magnetic phase diagrams for a wide range of interaction parameters. We find that skyrmion lattices can appear even with weak Dzyaloshinskii-Moriya interactions, but their stability is hindered by magnetic anisotropy. However, a weak easy plane magnetic anisotropy can be beneficial for stabilizing the skyrmion phase. Our results suggest that Cr\(/\)MoS\(_2\), Fe\(/\)MoS\(_2\), and Fe\(/\)WSe\(_2\) interfaces can host spin spirals formed from the 120\(^{\circ}\) antiferromagnetic states. Our results further suggests that for other interfaces, such as Fe\(/\)MoS\(_2\), the Dzyaloshinskii-Moriya interaction is strong enough to drive the system into a three-sublattice skyrmion lattice in the presence of experimentally feasible external magnetic field.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.2102.11246</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Anisotropy ; Antiferromagnetism ; Broken symmetry ; Chromium ; First principles ; Hypothetical particles ; Interaction parameters ; Iron ; Lattices ; Magnetic anisotropy ; Magnetism ; Manganese ; Monte Carlo simulation ; Particle theory ; Phase diagrams ; Physics - Materials Science ; Physics - Mesoscale and Nanoscale Physics ; Spirals ; Substrates ; Transition metals</subject><ispartof>arXiv.org, 2021-02</ispartof><rights>2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). 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As a possible material realization, we investigate the adsorption of transition-metal atoms (Cr, Mn, Fe, or Co) on a monolayer of MoS\(_2\), WS\(_2\), or WSe\(_2\) and obtain the exchange, anisotropy, and Dzyaloshinskii-Moriya interaction parameters using first-principles calculations. Using energy minimization and parallel-tempering Monte-Carlo simulations, we determine the magnetic phase diagrams for a wide range of interaction parameters. We find that skyrmion lattices can appear even with weak Dzyaloshinskii-Moriya interactions, but their stability is hindered by magnetic anisotropy. However, a weak easy plane magnetic anisotropy can be beneficial for stabilizing the skyrmion phase. Our results suggest that Cr\(/\)MoS\(_2\), Fe\(/\)MoS\(_2\), and Fe\(/\)WSe\(_2\) interfaces can host spin spirals formed from the 120\(^{\circ}\) antiferromagnetic states. Our results further suggests that for other interfaces, such as Fe\(/\)MoS\(_2\), the Dzyaloshinskii-Moriya interaction is strong enough to drive the system into a three-sublattice skyrmion lattice in the presence of experimentally feasible external magnetic field.</description><subject>Anisotropy</subject><subject>Antiferromagnetism</subject><subject>Broken symmetry</subject><subject>Chromium</subject><subject>First principles</subject><subject>Hypothetical particles</subject><subject>Interaction parameters</subject><subject>Iron</subject><subject>Lattices</subject><subject>Magnetic anisotropy</subject><subject>Magnetism</subject><subject>Manganese</subject><subject>Monte Carlo simulation</subject><subject>Particle theory</subject><subject>Phase diagrams</subject><subject>Physics - Materials Science</subject><subject>Physics - Mesoscale and Nanoscale Physics</subject><subject>Spirals</subject><subject>Substrates</subject><subject>Transition metals</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotj89LwzAcxYMgOOb-AE8WPLcm3yRNvAgy1AkDD-5e8nNktmlNWnH_vXXz9ODx3uN9ELohuGKSc3yv0k_4roBgqAgBVl-gBVBKSskArtAq5wPGGGoBnNMFevwYQlJtLlS0Rf48pi70MRchzsYYvEup79Q-ujGYYkxBxf3UqlS0apwdl6_RpZ_bbvWvS7R7ed6tN-X2_fVt_bQtFQdeStBWYhDaaipAOkwY5hK8NoIQJmorJWeUYY8Ns8ZLsNoTI4wH77VlmC7R7Xn2BNcMKXQqHZs_yOYEOSfuzokh9V-Ty2Nz6KcU508NsAdgkvCa01_JH1Tz</recordid><startdate>20210222</startdate><enddate>20210222</enddate><creator>Fang, Wuzhang</creator><creator>Raeliarijaona, Aldo</creator><creator>Po-Hao, Chang</creator><creator>Kovalev, Alexey A</creator><creator>Belashchenko, Kirill D</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20210222</creationdate><title>Spirals and skyrmions in antiferromagnetic triangular lattices</title><author>Fang, Wuzhang ; 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As a possible material realization, we investigate the adsorption of transition-metal atoms (Cr, Mn, Fe, or Co) on a monolayer of MoS\(_2\), WS\(_2\), or WSe\(_2\) and obtain the exchange, anisotropy, and Dzyaloshinskii-Moriya interaction parameters using first-principles calculations. Using energy minimization and parallel-tempering Monte-Carlo simulations, we determine the magnetic phase diagrams for a wide range of interaction parameters. We find that skyrmion lattices can appear even with weak Dzyaloshinskii-Moriya interactions, but their stability is hindered by magnetic anisotropy. However, a weak easy plane magnetic anisotropy can be beneficial for stabilizing the skyrmion phase. Our results suggest that Cr\(/\)MoS\(_2\), Fe\(/\)MoS\(_2\), and Fe\(/\)WSe\(_2\) interfaces can host spin spirals formed from the 120\(^{\circ}\) antiferromagnetic states. Our results further suggests that for other interfaces, such as Fe\(/\)MoS\(_2\), the Dzyaloshinskii-Moriya interaction is strong enough to drive the system into a three-sublattice skyrmion lattice in the presence of experimentally feasible external magnetic field.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.2102.11246</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Anisotropy Antiferromagnetism Broken symmetry Chromium First principles Hypothetical particles Interaction parameters Iron Lattices Magnetic anisotropy Magnetism Manganese Monte Carlo simulation Particle theory Phase diagrams Physics - Materials Science Physics - Mesoscale and Nanoscale Physics Spirals Substrates Transition metals |
| title | Spirals and skyrmions in antiferromagnetic triangular lattices |
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