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Impact of Spin-Entropy on the Thermoelectric Properties of a 2D Magnet.
Canetta, Alessandra; Volosheniuk, Serhii; Satheesh, Sayooj; Alvarinhas Batista, José Pedro; Castellano, Aloïs; Conte, Riccardo; Chica, Daniel George; Watanabe, Kenji; Taniguchi, Takashi; Roy, Xavier; van der Zant, Herre S J; Burghard, Marko; Verstraete, Matthieu Jean; Gehring, Pascal.
Afiliación
  • Canetta A; Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain (UCLouvain), 1348 Louvain-la-Neuve, Belgium.
  • Volosheniuk S; Kavli Institute of Nanoscience, Delft University of Technology, 2628CJ Delft, The Netherlands.
  • Satheesh S; Max-Planck-Institut für Festkörperforschung, D-70569 Stuttgart, Germany.
  • Alvarinhas Batista JP; Nanomat/Q-MAT/ and European Theoretical Spectroscopy Facility, Université de Liège, B-4000, Liège, Belgium.
  • Castellano A; Nanomat/Q-MAT/ and European Theoretical Spectroscopy Facility, Université de Liège, B-4000, Liège, Belgium.
  • Conte R; Kavli Institute of Nanoscience, Delft University of Technology, 2628CJ Delft, The Netherlands.
  • Chica DG; Department of Chemistry, Columbia University, New York, New York 10027, United States.
  • Watanabe K; Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan.
  • Taniguchi T; Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan.
  • Roy X; Department of Chemistry, Columbia University, New York, New York 10027, United States.
  • van der Zant HSJ; Kavli Institute of Nanoscience, Delft University of Technology, 2628CJ Delft, The Netherlands.
  • Burghard M; Max-Planck-Institut für Festkörperforschung, D-70569 Stuttgart, Germany.
  • Verstraete MJ; Nanomat/Q-MAT/ and European Theoretical Spectroscopy Facility, Université de Liège, B-4000, Liège, Belgium.
  • Gehring P; ITP, Physics Department, Utrecht University, 3508 TA Utrecht, The Netherlands.
Nano Lett ; 24(22): 6513-6520, 2024 Jun 05.
Article en En | MEDLINE | ID: mdl-38652810
ABSTRACT
Heat-to-charge conversion efficiency of thermoelectric materials is closely linked to the entropy per charge carrier. Thus, magnetic materials are promising building blocks for highly efficient energy harvesters as their carrier entropy is boosted by a spin degree of freedom. In this work, we investigate how this spin-entropy impacts heat-to-charge conversion in the A-type antiferromagnet CrSBr. We perform simultaneous measurements of electrical conductance and thermocurrent while changing magnetic order using the temperature and magnetic field as tuning parameters. We find a strong enhancement of the thermoelectric power factor at around the Néel temperature. We further reveal that the power factor at low temperatures can be increased by up to 600% upon applying a magnetic field. Our results demonstrate that the thermoelectric properties of 2D magnets can be optimized by exploiting the sizable impact of spin-entropy and confirm thermoelectric measurements as a sensitive tool to investigate subtle magnetic phase transitions in low-dimensional magnets.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Estados Unidos