Dresden 2026 – wissenschaftliches Programm
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FM: Fachverband Funktionsmaterialien
FM 22: Focus Session: Materials Discovery III – New materials and functionalities by general principles
FM 22.1: Hauptvortrag
Freitag, 13. März 2026, 09:30–10:00, BEY/0138
Topological thermoelectrics for solid state cooling — •Yu Pan1 and Claudia Felser2 — 1Chongqing University, Chongqing, China — 2Max Planck Institute for Chemical Physics of Solids
Thermoelectric effects enable the direct conversion between thermal energy and electrical energy, and has broad application potential in areas such as thermoelectric power generation, solid-state cooling, and precise temperature control. Classic thermoelectric materials mainly focus on heavily doped narrow bandgap semiconductor materials, whose thermoelectric performance is limited above room temperature (> 300 K). So far, further enhancement of thermoelectric performance at low temperatures (<300 K) faces significant challenges, severely restricting the application of thermoelectric materials in low-temperature solid-state cooling. In recent years, the surge of topological quantum materials has triggered many novel thermoelectric transport behaviors, especially the significantly enhanced low-temperature thermoelectric performance under magnetic fields, providing new opportunities to greatly improve low-temperature thermoelectric performance. For example, their linear-dispersion energy band structures and ultrahigh mobility significantly enhance the magneto-Seebeck effect and Nernst effect. On the other hand, topological quantum materials with broken symmetry can exhibit an anomalous Nernst thermoelectric potential far higher than that of conventional ferromagnets due to the presence of nonzero Berry curvature, laying a scientific foundation for thermoelectric applications of the anomalous Nernst effect under low or even zero magnetic fields.
Keywords: Topological materials; thermoelectrics; Seebeck effect; (anomalous) Nernst effect; solid state cooling