Our work accepted by Nature Commun. Congratulations!

October 20, 2020

Our recent work, "Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal", by Fei, Nina, Thanh et al., is accepted by Nature Communications. In thermoelectrics, there has been a long-standing limit of power factor (=thermopower^2 x electrical conductivity), due to the conflicting requirement that optimizes thermopower or electrical conductivity, but not both. In this work, by utilizing the topological singularity of Weyl nodes, we experimentally showed a giant power factor in a topological Weyl semimetal: 10-fold enhancement comparing to current best thermoelectrics. We further show that the giant magnitude is caused by an exotic quantized thermoelectric Hall effect, where the thermal Hall conductivity reaches a quantized universal value. Our experimental work fully confirmed the theoretical predictions from our colleauges Liang et al. (Phys. Rev. B 99, 155123, Science Advances 4, eaat2621). Congratulations to all group members for the hard work and collaborators and the dedicating support!