Anomalous Hall and Nernst effects in epitaxial films of topological kagome magnet 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Fe</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>Sn</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

Khadka, Durga; Thapaliya, T. R.; Parra, Sebastian Hurtado; Wen, Jiajia; Need, Ryan F.; Kikkawa, James M.; Huang, Sunxiang

doi:10.1103/physrevmaterials.4.084203

Cited by 33 publications

(27 citation statements)

References 44 publications

(73 reference statements)

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“…Fe 3 Sn 2 compounds (space group

R \bar{3} m

; hexagonal lattice constants a = 5.338 Å and c = 19.789 Å) is a rhombohedral crystal structure composed of the stacking sequences of two adjacent Fe 3 Sn layers and one Sn 2 honeycomb layer ( Figure a). [ 45 ] One Fe 3 Sn layer is composed of Fe kagome lattice with one Sn atom locating at the center of the kagome structure. Fe‐Fe distances are 2.732 and 2.582 Å for the two different kinds of equilateral triangles, respectively.…”

Section: Ferromagnetic Kagome Metal Fe3sn2mentioning

confidence: 99%

“…Reproduced with permission. [ 45 ] Copyright 2020, American Physical Society. b) Topographic image and the corresponding differential conductance map obtained at a bias voltage of 50 mV of a single atomic step, from which FeSn and Sn surfaces can be identified.…”

Section: Ferromagnetic Kagome Metal Fe3sn2mentioning

confidence: 99%

“…[ 51,52 ] The Seebeck coefficients of Fe‐Sn films vary by several times in different magnetic directions, indicating that there may be large anisotropy in ANE due to the intrinsic contribution of Berry curvature at Fermi energy in the 2D kagome plane. [ 45 ] It also shows that the research on the thermoelectric properties of Fe 3 Sn 2 single crystals and thin films is of great significance to the topological band structure. The controlled preparation from bulk Fe 3 Sn 2 to high‐quality thin strain films provides a new dimension for strain‐regulated Fe 3 Sn 2 performance and further promotes the development of emerging interface physics.…”

Section: Ferromagnetic Kagome Metal Fe3sn2mentioning

confidence: 99%

“…The thin film can enhance the effect of topological surface states and facilitate the physical adjustment of the interface by reducing the structure size. Fe 3 Sn 2 thin film was, thus, prepared by co-sputtering Fe atoms and Sn atom target on (0001)Ru/(111)Pt/(0001)Al 2 O 3 substrate in a high vacuum magnetron sputtering system by D. Khadka et al [45] They detected that the thin film with 60 nm thickness had a nearly square hysteresis loop and nearly full remanence when the magnetic field direction was parallel to the ab plane. Such a much smaller ab plane transformed magnetic field and almost complete remanence are useful for spintronics and magnetic modulating physical properties.…”

Section: Magnetic Properties and Magneto-transportmentioning

confidence: 99%

“…However, it has been realized that the interlayer coupling interaction between adjacent kagome layers reduces as the proportion of Sn increases for T m Sn n . [44] Thus, weaker coupling between layers enables T m Sn n to exhibit [45] Copyright 2020, American Physical Society. b) Topographic image and the corresponding differential conductance map obtained at a bias voltage of 50 mV of a single atomic step, from which FeSn and Sn surfaces can be identified.…”

Section: Introductionmentioning

confidence: 99%

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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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“…Fe 3 Sn 2 compounds (space group

R \bar{3} m

Section: Ferromagnetic Kagome Metal Fe3sn2mentioning

confidence: 99%

Section: Ferromagnetic Kagome Metal Fe3sn2mentioning

confidence: 99%

Section: Ferromagnetic Kagome Metal Fe3sn2mentioning

confidence: 99%

Section: Magnetic Properties and Magneto-transportmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Large Anomalous Nernst Effects at Room Temperature in Fe₃Pt Thin Films

Zhao

et al. 2023

Advanced Materials

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Heat current in ferromagnets can generate a transverse electric voltage perpendicular to magnetization, known as anomalous Nernst effect (ANE). ANE originates intrinsically from the combination of large Berry curvature and density of states near the Fermi energy. It shows technical advantages over the conventional longitudinal Seebeck effect in converting waste heat to electricity due to its unique transverse geometry. However, materials showing giant ANE remain to be explored. Herein, a large ANE thermopower of Syx ≈ 2 µV K−1 at room temperature in ferromagnetic Fe3Pt epitaxial films is reported, which also show a giant transverse thermoelectric conductivity of αyx ≈ 4 A K−1 m−1 and a remarkable coercive field of 1300 Oe. The theoretical analysis reveals that the strong spin‐orbit interaction in addition to the hybridization between Pt 5d and Fe 3d electrons leads to a series of distinct energy gaps and large Berry curvature in the Brillouin zone, which is the key for the large ANE. These results highlight the important roles of both Berry curvature and spin‐orbit coupling in achieving large ANE at zero magnetic field, providing pathways to explore materials with giant transverse thermoelectric effect without an external magnetic field.

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