Submitted by Leon Brindley on Tue, 11/02/2025 - 18:48
Our paper Observation of Anomalously Large Nernst Effects in Conducting Polymers has now been published in Nature Communications! While the Nernst effect is well-documented in inorganic semiconductors and metals, this phenomenon is typically negligible in polymers with lower structural order and an inherently low mobility. However, our study challenges this notion by observing an anomalously large Nernst effect in a range of conducting polymers.
The Nernst effect describes the generation of a transverse electric field when a longitudinal temperature gradient is applied in the presence of a perpendicular magnetic field. Yingqiao Ma et al. studied the Nernst response in materials such as PBTTT, PDPP4T and PBFDO. Our results revealed a significant Nernst coefficient, exceeding the Fermi-liquid predictions by 2-3 orders of magnitude. For more details, read the full paper by visiting the reference linked below.