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

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 th...

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Autores principales: Mende, Felix, Noky, Jonathan, Guin, Satya N., Fecher, Gerhard H., Manna, Kaustuv, Adler, Peter, Schnelle, Walter, Sun, Yan, Fu, Chenguang, Felser, Claudia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8425906/
https://www.ncbi.nlm.nih.gov/pubmed/34240573
http://dx.doi.org/10.1002/advs.202100782
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author Mende, Felix
Noky, Jonathan
Guin, Satya N.
Fecher, Gerhard H.
Manna, Kaustuv
Adler, Peter
Schnelle, Walter
Sun, Yan
Fu, Chenguang
Felser, Claudia
author_facet Mende, Felix
Noky, Jonathan
Guin, Satya N.
Fecher, Gerhard H.
Manna, Kaustuv
Adler, Peter
Schnelle, Walter
Sun, Yan
Fu, Chenguang
Felser, Claudia
author_sort Mende, Felix
collection PubMed
description 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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spelling pubmed-84259062021-09-13 Large Anomalous Hall and Nernst Effects in High Curie‐Temperature Iron‐Based Heusler Compounds Mende, Felix Noky, Jonathan Guin, Satya N. Fecher, Gerhard H. Manna, Kaustuv Adler, Peter Schnelle, Walter Sun, Yan Fu, Chenguang Felser, Claudia Adv Sci (Weinh) Research Articles 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. John Wiley and Sons Inc. 2021-07-08 /pmc/articles/PMC8425906/ /pubmed/34240573 http://dx.doi.org/10.1002/advs.202100782 Text en © 2021 The Authors. Advanced Science published by Wiley‐VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Mende, Felix
Noky, Jonathan
Guin, Satya N.
Fecher, Gerhard H.
Manna, Kaustuv
Adler, Peter
Schnelle, Walter
Sun, Yan
Fu, Chenguang
Felser, Claudia
Large Anomalous Hall and Nernst Effects in High Curie‐Temperature Iron‐Based Heusler Compounds
title Large Anomalous Hall and Nernst Effects in High Curie‐Temperature Iron‐Based Heusler Compounds
title_full Large Anomalous Hall and Nernst Effects in High Curie‐Temperature Iron‐Based Heusler Compounds
title_fullStr Large Anomalous Hall and Nernst Effects in High Curie‐Temperature Iron‐Based Heusler Compounds
title_full_unstemmed Large Anomalous Hall and Nernst Effects in High Curie‐Temperature Iron‐Based Heusler Compounds
title_short Large Anomalous Hall and Nernst Effects in High Curie‐Temperature Iron‐Based Heusler Compounds
title_sort large anomalous hall and nernst effects in high curie‐temperature iron‐based heusler compounds
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8425906/
https://www.ncbi.nlm.nih.gov/pubmed/34240573
http://dx.doi.org/10.1002/advs.202100782
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