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Hybridizing anomalous Nernst effect in artificially tilted multilayer based on magnetic topological material
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Hybridizing anomalous Nernst effect in artificially tilted multilayer based on magnetic topological material
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Journal Article
Hybridizing anomalous Nernst effect in artificially tilted multilayer based on magnetic topological material
2024
Overview
Transverse thermoelectric conversion holds significant potential in addressing complex challenges faced by classical Seebeck/Peltier modules. A promising transverse thermoelectric phenomenon is the anomalous Nernst effect originating from nontrivial band structures in magnetic topological materials. However, the currently reported performance of the anomalous Nernst effect in topological materials, e.g., Co
2
MnGa, remains insufficient for practical thermoelectric applications. Here, we unveil an unconventional availability of the anomalous Nernst effect by integrating magnetic topological materials into artificially tilted multilayers, known to exhibit the structure-induced transverse thermoelectric conversion due to the off-diagonal Seebeck effect. Our experiments reveal that the transverse thermoelectric performance in Co
2
MnGa-based artificially tilted multilayers is improved through the hybrid action of the anomalous Nernst and off-diagonal Seebeck effects, with the magnetization-dependent performance modulation being one order of magnitude greater than the performance achievable with the anomalous Nernst effect alone. This synergy underscores the importance of hybrid transverse thermoelectric conversion and paves a way for advancing thermoelectric applications using magnetic materials.
The anomalous Nernst effect is a key for transverse thermoelectric applications. Here, the authors show an intense performance improvement of the anomalous Nernst effect via hybrid actions with the off-diagonal Seebeck effect in artificial materials.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
