Chiral properties of the zero-field spiral state and field-induced magnetic phases of the itinerant kagome metal 
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Dally, Rebecca; Lynn, Jeffrey W.; Ghimire, Nirmal; Michel, D.; Siegfried, Peter; Mazin, I. I.

doi:10.1103/physrevb.103.094413

Cited by 35 publications

(24 citation statements)

References 28 publications

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“…While magnetic complexity is often encountered in geometrically frustrated kagome and triangular layers with AF interactions, in R166 the intralayer Mn-Mn interactions are strongly ferromagnetic (FM). Magnetic instabilities to temperature and applied magnetic fields in R166 compounds [19][20][21][22] arise from a combination of competing Mn and R magnetic anisotropies (for moment-bearing Rions) and competing interlayer magnetic interactions [23][24][25][26]. The latter case is more apparent for non-momentbearing R = Y and Lu ions.…”

Section: Introductionmentioning

confidence: 99%

Competing magnetic energy scales in the topological flat-band ferrimagnet TbMn6Sn6

Riberolles¹,

Slade²,

Abernathy³

et al. 2021

Preprint

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TbMn6Sn6 is a metallic ferrimagnet displaying signatures of Weyl-semimetallic behavior and topological magnons arising from flat-band magnetism and spin-orbit coupling within its Mn kagome layers. Inelastic neutron scattering measurements find strong ferromagnetic (FM) interactions within the Mn kagome layer and reveal a magnetic bandwidth of ∼ 230 meV. The low-energy magnetic excitations are characterized by strong FM Mn-Mn and antiferromagnetic (AF) Mn-Tb interlayer magnetic couplings. We observe weaker, competing long-range FM and AF Mn-Mn interlayer interactions similar to those driving helical magnetism in the YMn6Sn6 system. Combined with density-functional theory calculations, we find that competing Mn-Mn interlayer magnetic interactions occur in all RMn6Sn6 compounds with R = Y, Gd−Lu, resulting in magnetic instabilities and tunability when Mn-R interactions are weak. In the case of TbMn6Sn6, strong AF Mn-Tb coupling ensures a highly stable three-dimensional ferrimagnetic network.

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Section: Introductionmentioning

confidence: 99%

Competing magnetic energy scales in the topological flat-band ferrimagnet TbMn6Sn6

Riberolles¹,

Slade²,

Abernathy³

et al. 2021

Preprint

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“…The rare-earth Tb atoms, possessing a strong easy-axis magnetocrystalline anisotropy (MA), * liqinke@ameslab.gov antiferromagnetically couple with the Mn atoms and align the Mn spins along the out-of-plane direction below the spin-reorientation temperatures T SR . This discovery of quantum-limit Chern topological magnetism in TbMn 6 Sn 6 has rekindled the interest in the RMn 6 Sn 6 family of compounds, where different R atoms and correspondingly a variety of magnetic structures provide a rich platform to explore quantum phenomena [5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Interplay between magnetism and band topology in Kagome magnets $R$Mn$_6$Sn$_6$

Lee¹,

Skomski²,

Wang³

et al. 2022

Preprint

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Kagome-lattice magnets RMn6Sn6 recently emerged as a new platform to exploit the interplay between magnetism and topological electronic states. Using ab initio methods, we systematically investigate the electronic structures and intrinsic magnetic properties in RMn6Sn6 with R = Gd, Tb, Dy, Ho, and Er. We reveal a non-monotonic dependence of the magnetocrystalline anisotropy energy on the spin quantization for all RMn6Sn6, except for R = Gd. Moreover, the Mn sublattice exhibits easy-plane anisotropy of similar amplitude in all RMn6Sn6 compounds. Our results show that TbMn6Sn6 has an easy-axis anisotropy, while DyMn6Sn6 and HoMn6Sn6 have easy-cone anisotropy, and GdMn6Sn6 and ErMn6Sn6 have easy-plane anisotropy. These numerical findings all agree well with the experiment and are fully consistent with the Mn coordination of the R atoms. The observed band structures of various RMn6Sn6 compounds share great similarities near the Fermi level as they mainly consist of non-4f bands. Multiple Dirac crossings occur at the Brillouin zone corners, opened by spin-orbit coupling (SOC). Most of these crossings are strongly kz-dependent. The most prominent 2D-like Dirac crossing that can be effectively gapped by SOC lies ∼ 0.7 eV above the Fermi level, much higher than in previously reported band structures calculated in density functional theory [Ref. 1]. The inclusion of electron correlations within Mn-3d electrons, however, can significantly lower this SOC-gapped crossing closer to the Fermi level, making it more relevant for the observation of topological phenomena. Finally, we predict an enhancement of the Mn magnetic moment on the RMn6Sn6 surface, which may impact the topological band structures of surfaces or thin films, and is yet to be confirmed experimentally.

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“…The kagome lattice has been observed in a plethora of materials both in the form of 2D van der Waals materials such as AV 3 Sb 5 (A = K, Rb, Cs), [25][26][27] Pd 3 P 2 S 8 , [28] cluster compound Nb 3 X 8 (X = Cl, Br, I), [29] and non-Van der Waals materials such as twisted bilayer silicene, [19] jarosite-based materials and Cu 2+ ion based herbertsmithite, [30][31][32] a few 2D organometallic frameworks, [33][34][35] as well as binary kagome metal magnets T m X n (T = T: 3d transition metals, X: Sn, Ge, m:n = 3:1, 3:2, 1:1) and ternary ferromagnetic Co 3 Sn 2 S 2 , [36,37] YMn 6 Sn 6 . [38,39] Among them, binary metal kagome magnets, T m Sn n , with the variety of magnetic ground states and topological electronic structures, have been recently received great interests as a platform for searching novel correlated topological phases. The relatively simple crystal structures and metallic behaviors of T m Sn n facilitate them in the surface science techniques, especially scanning tunneling microscopy (STM), scanning tunneling spectroscopy (STS), and angle-resolved photoemission spectroscopy (ARPES) that are powerful in understanding electronic structures of materials.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress on 2D Kagome Magnets: Binary T_mSn_n (T = Fe, Co, Mn)

Zhang

Feng

et al. 2021

Adv Quantum Tech

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Due to the particularity of the lattice geometry, intriguing electronic characteristics of Dirac cone and flat band can coexist in the two‐dimensional (2D) kagome lattice. The 2D kagome materials, therefore, have attracted tremendous attention, as a platform for studying the topological non‐trivial band structures and strong correlated phenomena. In this paper, the recent experimental progress on binary kagome metals Fe3Sn2, FeSn, CoSn, and Mn3Sn, mainly by the methods of scanning tunneling microscopy (STM), scanning tunneling spectroscopy (STS), and angle‐resolved photoemission spectroscopy (ARPES), are reviewed. In those compounds, the kagome layers give rise to the electronic structure of flat bands and Dirac cones, which induce a wide range of novel electron behaviors. Their exposed surface structure, electronic band structure, and topological properties are therefore highlighted, aiming at illustrating the determining role of their 2D kagome layers. In addition, the interplay between frustrated kagome geometry, frustrated magnetism, and topological magnetism, which brings new opportunities and broad prospects to the research of strongly correlated topological kagome magnetic materials, is introduced through reviewing recent experimental works by electronic and magnetic transport measurements.

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Chiral properties of the zero-field spiral state and field-induced magnetic phases of the itinerant kagome metal YMn6Sn6

Cited by 35 publications

References 28 publications

Competing magnetic energy scales in the topological flat-band ferrimagnet TbMn6Sn6

Competing magnetic energy scales in the topological flat-band ferrimagnet TbMn6Sn6

Interplay between magnetism and band topology in Kagome magnets $R$Mn$_6$Sn$_6$

Recent Progress on 2D Kagome Magnets: Binary T_mSn_n (T = Fe, Co, Mn)

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Chiral properties of the zero-field spiral state and field-induced magnetic phases of the itinerant kagome metal YMn6Sn6

Cited by 35 publications

References 28 publications

Competing magnetic energy scales in the topological flat-band ferrimagnet TbMn6Sn6

Competing magnetic energy scales in the topological flat-band ferrimagnet TbMn6Sn6

Interplay between magnetism and band topology in Kagome magnets $R$Mn$_6$Sn$_6$

Recent Progress on 2D Kagome Magnets: Binary TmSnn (T = Fe, Co, Mn)

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Product

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About

Recent Progress on 2D Kagome Magnets: Binary T_mSn_n (T = Fe, Co, Mn)