Relationship triangle between energy, magnetic field and the temperature difference in topological materials

Thermoelectrics & Topology - Y. Pan

Thermoelectric effects enable the direct conversion between heat and electricity, which offers promising solutions for power generation and solid-state cooling. Moreover, investigations of thermoelectric transport properties are significant for understanding the fundamental transport behavior of quasiparticles in emerging topological materials.

This group mainly focuses on two research directions. First, we are interested in investigating the intrinsic electronic structure and phonon dispersion and their effects on the electrical and thermal transport properties of well-established thermoelectric materials by focusing on their single crystalline forms. Second, we aim at the exploration of emerging topologically non-trivial materials for exotic thermoelectric energy conversion, particularly the longitudinal and transverse thermoelectric responses under the magnetic field. With the first law of materials science, i.e., structure determines properties, our work will be established on the understanding of the relationships between the chemical aspects of crystal structure and defects and the physical aspects of electronic structure, phonon dispersion, and transport properties.
The group has a strong background in crystal growth and transport properties measurements of solid materials. To achieve our goal, we will have extensive collaborations with microstructure characterization, as well as theoretical and experimental studies of electronic structure and phonon dispersion.


Publication Highlights

Yu Pan, Congcong Le, Bin He, Sarah J. Watzman, Mengyu Yao, Johannes Gooth, Joseph P. Heremans, Yan Sun, and Claudia Felser, "Giant anomalous Nernst signal in the antiferromagnet YbMnBi2," Nature Materials 21, 203-209 (2022).
Yu Pan, Bin He, Toni Helm, Dong Chen, Walter Schnelle, and Claudia Felser, "Ultrahigh transverse thermoelectric power factor in flexible Weyl semimetal WTe2," Nature Communications 13, 1-8 (2022).
Yu Pan, Feng-Ren Fan, Xiaochen Hong, Bin He, Congcong Le, Walter Schnelle, Yangkun He, Kazuki Imasato, Horst Borrmann, Congcong Hess, Bernd Büchner, Yan Sun, Chenguang Fu, G. Jeffrey Snyder, and Claudia Felser, "Thermoelectric Properties of Novel Semimetals: A Case Study of YbMnSb2," Advanced Materials 33 (7), 1-8 (2021).
Yu Pan, Mengyu Yao, Xiaochen Hong, Yifan Zhu, Fengren Fan, Kazuki Imasato, Yangkun He, Christian Hess, Jörg Fink, Jiong Yang, Bernd Buechner, Chenguang Fu, G. Jeffrey Snyder, and Claudia Felser, "Mg3(Bi,Sb)2 single crystals towards high thermoelectric performance," Energy & Environmental Science 13 (6), 1717-1724 (2020).

Contributions to the Institute’s Scientific Reports

Go to Editor View