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Materials Data on Mn3Sn by Materials Project
Mn3Sn is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Mn sites. In the first Mn site, Mn is bonded to eight Mn and four equivalent Sn atoms to form distorted MnMn8Sn4 cuboctahedra that share corners with four equivalent SnMn12 cuboctahedra, corners with fourteen equivalent MnMn8Sn4 cuboctahedra, edges with six equivalent SnMn12 cuboctahedra, edges with twelve MnMn8Sn4 cuboctahedra, faces with four equivalent SnMn12 cuboctahedra, and faces with sixteen MnMn8Sn4 cuboctahedra. There are a spread of Mn–Mn bond distances ranging from 2.72–2.87 Å. All Mn–Sn bond lengths are 2.80 Å. In the second Mn site, Mn is bonded to eight equivalent Mn and four equivalent Sn atoms to form distorted MnMn8Sn4 cuboctahedra that share corners with four equivalent SnMn12 cuboctahedra, corners with fourteen MnMn8Sn4 cuboctahedra, edges with six equivalent SnMn12 cuboctahedra, edges with twelve equivalent MnMn8Sn4 cuboctahedra, faces with four equivalent SnMn12 cuboctahedra, and faces with sixteen MnMn8Sn4 cuboctahedra. All Mn–Sn bond lengths are 2.80 Å. Sn is bonded to twelve Mn atoms to form SnMn12 cuboctahedra that share corners with six equivalent SnMn12 cuboctahedra, corners with twelve MnMn8Sn4 cuboctahedra, edges with eighteen MnMn8Sn4 cuboctahedra, faces with eight equivalent SnMn12 cuboctahedra, and faces with twelve MnMn8Sn4 cuboctahedra.
Materials Data on Mn3Sn(PO4)6 by Materials Project
Mn3Sn(PO4)6 crystallizes in the trigonal R3 space group. The structure is three-dimensional. there are three inequivalent Mn+5.33+ sites. In the first Mn+5.33+ site, Mn+5.33+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six PO4 tetrahedra. There is three shorter (1.91 Å) and three longer (1.95 Å) Mn–O bond length. In the second Mn+5.33+ site, Mn+5.33+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six PO4 tetrahedra. There is three shorter (1.86 Å) and three longer (1.92 Å) Mn–O bond length. In the third Mn+5.33+ site, Mn+5.33+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with six PO4 tetrahedra. There is three shorter (1.92 Å) and three longer (1.94 Å) Mn–O bond length. Sn2+ is bonded to six O2- atoms to form SnO6 octahedra that share corners with six PO4 tetrahedra. There are three shorter (2.03 Å) and three longer (2.04 Å) Sn–O bond lengths. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one SnO6 octahedra and corners with three MnO6 octahedra. The corner-sharing octahedra tilt angles range from 25–40°. There are a spread of P–O bond distances ranging from 1.52–1.55 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one SnO6 octahedra and corners with three MnO6 octahedra. The corner-sharing octahedra tilt angles range from 25–40°. There are a spread of P–O bond distances ranging from 1.53–1.55 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn+5.33+ and one P5+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Sn2+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn+5.33+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn+5.33+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sn2+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn+5.33+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn+5.33+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn+5.33+ and one P5+ atom.
Materials Data on Mn3Sn by Materials Project
Mn3Sn is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Mn sites. In the first Mn site, Mn is bonded to four equivalent Mn and four equivalent Sn atoms to form a mixture of distorted edge, corner, and face-sharing MnMn4Sn4 tetrahedra. All Mn–Mn bond lengths are 2.65 Å. All Mn–Sn bond lengths are 2.65 Å. In the second Mn site, Mn is bonded in a 8-coordinate geometry to eight equivalent Mn and six equivalent Sn atoms. All Mn–Sn bond lengths are 3.06 Å. Sn is bonded in a distorted body-centered cubic geometry to fourteen Mn atoms.
Materials Data on Mn3Sn(PO4)4 by Materials Project
Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
Tunable topological Hall effects in noncollinear antiferromagnet Mn 3 Sn/Pt bilayers
Noncollinear antiferromagnet Mn3Sn has attracted wide interest as it is a candidate for Weyl semimetal. Here, we report the observation of topological Hall like signals in Mn3Sn/Pt bilayers grown on Al 2 O 3 (0001). X-ray diffraction and scanning transmission electron microscopy results confirm the high epitaxial quality of the c-axis-oriented Mn3Sn films. The detected topological Hall resistivity shows a broad temperature range from 210 to 365 K by tuning the thickness of Mn3Sn from 3 to 15 nm. Compared with previously reported topological Hall effects in Mn3Sn at temperatures below 50 K, the observed high-temperature topological Hall signal is likely due to the stabilization of topological spin textures enabled by the strong spin–orbit coupling of the Pt overlayer and the Dzyaloshinskii–Moriya interaction at the Mn3Sn/Pt interface.
Room-temperature terahertz anomalous Hall effect in Weyl antiferromagnet Mn 3 Sn thin films
Antiferromagnetic spin motion at terahertz (THz) frequencies attracts growing interests for fast spintronics, however, their smaller responses to external field inhibit device application. Recently the noncollinear antiferromagnet Mn 3 Sn, a Weyl semimetal candidate, was reported to show large anomalous Hall effect (AHE) at room temperature comparable to ferromagnets. Dynamical aspect of such large responses is an important issue to be clarified for future THz data processing. Here the THz anomalous Hall conductivity in Mn 3 Sn thin films is investigated by polarization-resolved spectroscopy. Large anomalous Hall conductivity Re σxyð Þ ω 20 Ω1cm1 at THz frequencies is clearly observed as polarization rotation. A peculiar temperature dependence corresponding to the breaking/recovery of symmetry in the spin texture is also discussed. Observation of the THz AHE at room temperature demonstrates the ultrafast readout for the antiferromagnetic spintronics using Mn3Sn, and will also open new avenue for studying nonequilibrium dynamics in Weyl antiferromagnets.
Temperature-induced anomalous magnetotransport in the Weyl semimetal Mn 3 Ge
The magnetic Weyl semimetallic state can lead to intriguing magnetotransport, such as chiral anomaly and the layered quantum Hall effect. Mn3X (X = Sn, Ge) is a noncollinear antiferromagnetic semimetal where a Weyl semimetallic state is stabilized by time-reversal symmetry breaking. Compared to the well-studied Mn3Sn, the Weyl fermion-induced magnetotransport in Mn3Ge has been merely studied. Here, we report an in-depth study on the magnetotransport in a microfabricated Mn3Ge single crystal from room temperature to 10 K. We reveal an anomalous anisotropic magnetoresistance with fourfold symmetry and a positive high-field longitudinal magnetoresistance below the critical temperature (160–170 K). The possible origin is the temperature-induced tilting of the Weyl nodes. Our study helps to understand the magnetotransport properties in the Weyl fermion system.
Large Nernst Effect and Thermodynamics Properties in Weyl Antiferromagnet
The noncollinear antiferromagnet Mn3Sn exhibits a large anomalous Hall effect (AHE) driven by a large Berry curvature despite the vanishingly small magnetization. Theoretically, the large Berry curvature in antiferromagnets is predicted to be induced by the time-reversal breaking Weyl state in momentum space. Here, we comprehensively study the thermal conductivity, specific heat, thermoelectric power S(T), and thermomagnetic power S ji (T) in single crystals of Mn 3 Sn. Mn 3 Sn exhibited a large spontaneous anomalous Nernst effect (ANE) at room temperature; in particular, the signal magnitude of Mn 3 Sn exceeded 0.6 µV/K, which is comparable to that of ordinary ferromagnets. The large ANE results from the magnetic Weyl states near the Fermi level E F and likely shares its origin with the AHE. Moreover, the possibility of Nernst-type thermoelectric modules was evaluated by analyzing the basic thermal and electric physical properties.