<div class="csl-bib-body">
<div class="csl-entry">Pustogow, A. (2025, March 19). <i>Metallic Thermoelectrics: High Performance via Scattering</i> [Conference Presentation]. APS Joint March & April Meeting: Global Physics Summit 2025, Anaheim, United States of America (the). http://hdl.handle.net/20.500.12708/225053</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/225053
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dc.description.abstract
Thermoelectric (TE) materials directly convert thermal into electrical energy and vice versa, making them promising for a plethora of applications in refrigeration or power generation. However, state-of-theart semiconductors in the focus of current research did not make the leap into broad applications due to their low power density and poor mechanical properties. Metallic systems would be superior in this regard, but remained largely neglected so far due to their small Seebeck coefficient S.
Here we realize high TE performance in metals via controlled tuning of electronic scattering. Strikingly, we discover record-high power factors in binary NixAu1-x alloys, exceeding previous benchmark values by several times [1,2]. The unusually high S in this metallic system results from strongly electron-hole asymmetric charge transport in a highly conductive s-band, where we selectively reduce the mobility of holes by interband scattering from localized Ni d-electron states placed right below EF. Through our new paradigm of enhancing S in metals by scattering – cardinally different from tuning the density of states of the conduction electrons in semiconductors – we implement high-throughput computational materials screening and discover ultrahigh power factors also in Ni-based systems without Au [3].
[1] Sci. Adv. 9, eadj1611, (2023)
[2] Phys. Rev. Materials 8, 095403 (2024)
[3] arXiv:2404.08067
en
dc.language.iso
en
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dc.subject
Thermoelectricity
en
dc.subject
metallic thermoelectrics
en
dc.subject
interband scattering
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dc.title
Metallic Thermoelectrics: High Performance via Scattering
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.type.category
Conference Presentation
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tuw.researchTopic.id
M2
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tuw.researchTopic.id
E3
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tuw.researchTopic.id
C1
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.name
Climate Neutral, Renewable and Conventional Energy Supply Systems
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tuw.researchTopic.name
Computational Materials Science
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tuw.researchTopic.value
50
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tuw.researchTopic.value
10
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tuw.researchTopic.value
40
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tuw.publication.orgunit
E138-03 - Forschungsbereich Functional and Magnetic Materials
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tuw.author.orcid
0000-0001-9428-5083
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tuw.event.name
APS Joint March & April Meeting: Global Physics Summit 2025
en
tuw.event.startdate
16-03-2025
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tuw.event.enddate
25-03-2025
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tuw.event.online
Hybrid
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tuw.event.type
Event for scientific audience
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tuw.event.place
Anaheim
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tuw.event.country
US
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tuw.event.institution
American Physical Society
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tuw.event.presenter
Pustogow, Andrej
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tuw.event.track
Multi Track
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wb.sciencebranch
Physik, Astronomie
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wb.sciencebranch.oefos
1030
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wb.sciencebranch.value
100
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item.openairetype
conference paper not in proceedings
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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item.cerifentitytype
Publications
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item.languageiso639-1
en
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item.grantfulltext
none
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item.fulltext
no Fulltext
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crisitem.author.dept
E138-03 - Forschungsbereich Functional and Magnetic Materials
