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  Giant Anomalous Hall Conductivity in the Itinerant Ferromagnet LaCrSb3 and the Effect of f-Electrons

Kumar, N., Lamba, N., Gayles, J., Le, C., Vir, P., Guin, S. N., et al. (2021). Giant Anomalous Hall Conductivity in the Itinerant Ferromagnet LaCrSb3 and the Effect of f-Electrons. Advanced Materials, 4(6): 2100023, pp. 1-7. doi:10.1002/qute.202100023.

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Kumar, Nitesh1, Autor           
Lamba, Neetu1, Autor           
Gayles, Jacob1, Autor           
Le, Congcong1, Autor           
Vir, Praveen1, Autor           
Guin, Satya N.1, Autor           
Sun, Yan1, Autor           
Felser, Claudia2, Autor           
Shekhar, Chandra3, Autor           
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
3Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863428              

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Schlagwörter: anomalous Hall effect, electrical transport, first-principles calculations, itinerant ferromagnet, Antimony compounds, Ferromagnetic materials, Ferromagnetism, Hall effect, Lanthanum compounds, Magnets, Spin polarization, Superconducting materials, Anomalous hall effects, Dispersionless, Electric transport properties, Ferromagnets, Hall conductivity, Itinerant ferromagnets, Momentum spaces, Primary sources, Chromium compounds
 Zusammenfassung: Itinerant ferromagnets constitute an important class of materials wherein spin polarization can affect the electric transport properties in nontrivial ways. One such phenomenon is anomalous Hall effect which depends on the details of the band structure such as the amount of band crossings in the valence band of the ferromagnet. Here, extraordinary anomalous Hall effect is found in an itinerant ferromagnetic metal LaCrSb3. The rather 2D nature of the magnetic subunit imparts large anisotropic anomalous Hall conductivity of 1250 Ω−1 cm−1 at 2 K. The investigations suggest that a strong Berry curvature by abundant momentum-space crossings and narrow energy-gap openings are the primary sources of the anomalous Hall conductivity. An important observation is the existence of quasi-dispersionless bands in LaCrSb3 which is now known to increase the anomalous Hall conductivity. After introducing f-electrons, anomalous Hall conductivity experiences more than twofold increase and reaches 2900 Ω−1 cm−1 in NdCrSb3. © 2021 The Authors. Advanced Quantum Technologies published by Wiley-VCH GmbH

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Sprache(n): eng - English
 Datum: 2021-05-032021-05-03
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1002/qute.202100023
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Titel: Advanced Materials
  Andere : Adv. Mater.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Weinheim : Wiley-VCH
Seiten: - Band / Heft: 4 (6) Artikelnummer: 2100023 Start- / Endseite: 1 - 7 Identifikator: ISSN: 0935-9648
CoNE: https://pure.mpg.de/cone/journals/resource/954925570855