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  Large Anomalous Hall and Nernst Effects in High Curie-Temperature Iron-Based Heusler Compounds

Mende, F., Noky, J., Guin, S. N., Fecher, G. H., Manna, K., Adler, P., et al. (2021). Large Anomalous Hall and Nernst Effects in High Curie-Temperature Iron-Based Heusler Compounds. Advanced Science, 8(17): 2100782, pp. 1-9. doi:10.1002/advs.202100782.

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 Creators:
Mende, Felix1, Author              
Noky, Jonathan1, Author              
Guin, Satya N.1, Author              
Fecher, Gerhard H.2, Author              
Manna, Kaustuv1, Author              
Adler, Peter3, Author              
Schnelle, Walter4, Author              
Sun, Yan1, Author              
Fu, Chenguang1, Author              
Felser, Claudia5, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              
3Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863435              
4Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
5Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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Free keywords: disorder, Heusler compounds, magnetic Weyl materials, single crystals, thermoelectrics
 Abstract: Abstract The interplay between topology and magnetism has recently sparked the frontier studies of magnetic topological materials that exhibit intriguing anomalous Hall and Nernst effects owning to the large intrinsic Berry curvature (BC). To better understand the anomalous quantum transport properties of these materials and their implications for future applications such as electronic and thermoelectric devices, it is crucial to discover more novel material platforms for performing anomalous transverse transport studies. Here, it is experimentally demonstrated that low-cost Fe-based Heusler compounds exhibit large anomalous Hall and Nernst effects. An anomalous Hall conductivity of 250?750 S cm?1 and Nernst thermopower of above 2 µV K?1 are observed near room temperature. The positive effect of anti-site disorder on the anomalous Hall transport is revealed. Considering the very high Curie temperature (nearly 1000 K), larger Nernst thermopowers at high temperatures are expected owing to the existing magnetic order and the intrinsic BC. This work provides a background for developing low-cost Fe-based Heusler compounds as a new material platform for anomalous transport studies and applications, in particular, near and above room temperature.

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Language(s): eng - English
 Dates: 2021-07-082021-07-08
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1002/advs.202100782
 Degree: -

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Title: Advanced Science
  Other : Adv. Sci.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 8 (17) Sequence Number: 2100782 Start / End Page: 1 - 9 Identifier: ISSN: 2198-3844
CoNE: https://pure.mpg.de/cone/journals/resource/2198-3844