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UID:DSC-22974
DTSTART;TZID=Europe/Berlin:20260623T090000
SEQUENCE:1781588243
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20260623T100000
URL:https://dresden-science-calendar.org/calendar/en/detail/22974
LOCATION:IFW\, Helmholtzstraße 2001069 Dresden
SUMMARY:Zebarjadi: Metallic Thermoelectrics: Machine-Learning Discovery\, A
 dditive Manufacturing\, and Magnetotransport
CLASS:PUBLIC
DESCRIPTION:Speaker: Associate Prof. Mona Zebarjadi\nInstitute of Speaker: 
 University of Virginia\, USA\nTopics:\n\n Location:\n  Name: IFW (D2E.27\,
  IFW Dresden)\n  Street: Helmholtzstraße 20\n  City: 01069 Dresden\n  Pho
 ne: \n  Fax: \nDescription: Traditional thermoelectric materials suffer fr
 om low thermal conductivity\, which blocks passive heat dissipation during
  electronic cooling. To overcome this\, metallic thermoelectric materials 
 are emerging as a robust alternative. By combining high thermal conductivi
 ty with a large power factor\, metals can simultaneously pump heat activel
 y and conduct it passively\, creating highly efficient active heat sinks. 
 To explore this vast design space\, we developed a curated database of bin
 ary alloys and a hierarchical machine-learning framework to predict temper
 ature-dependent thermopower. This framework successfully identified and va
 lidated promising\, earth-abundant candidates like Ni-Fe\, Ni-Co\, and Cu-
 Ni. Furthermore\, we demonstrate that these alloys are highly compatible w
 ith additive manufacturing. Using Directed Energy Deposition with low-cost
 \, industrial powders\, we successfully fabricated structures that maintai
 n the thermoelectric performance\, bridging the gap from digital discovery
  to large-scale\, scalable production. Expanding beyond conventional trans
 port\, we also leverage magnetism and topology to manipulate heat in metal
 lic systems. By utilizing spin-orbit coupling and symmetry-breaking mechan
 isms\, we show how quantum features—specifically\, large Berry curvature
 —can be engineered to drive pronounced anomalous Hall\, Nernst\, and Tho
 mson responses. Using density functional theory\, we demonstrate how trans
 ition-metal intercalation in 2H-TaS2 systematically tunes electronic bondi
 ng\, magnetic phases\, and anomalous transport. Moving to thin films\, we 
 show that substrate-induced strain and epitaxial orientation in collinear 
 antiferromagnetic FeRh explicitly break inversion symmetry\, unlocking a f
 inite Berry curvature forbidden in bulk form. Finally\, we demonstrate tha
 t this structural engineering directly tailors the temperature span of fir
 st-order magnetic transitions\, allowing precise control over thermomagnet
 ic profiles.
DTSTAMP:20260616T185823Z
CREATED:20260610T053823Z
LAST-MODIFIED:20260616T053723Z
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