Speaker
Description
AM2X2 (A = alkaline earth metals or divalent lanthanides; M = divalent transition metals or Mg; X = nitrogen group elements) can represent a number of high-temperature superconductors and decent thermoelectric materials. One major mystery brought to our attention in thermoelectric AM2X2 compounds is the significantly distinct thermoelectric figures of merit (zT) of AMg2Sb2 materials that can vary orders of magnitude with different A elements, which is in sharp contrast to the very similar zT values of both their AZn2Sb2 and AMg2Bi2 pristine counterparts. In this talk, I will discuss the determining factor for such a huge discrepancy of AMg2Sb2 in thermoelectric performance. Time permitting, some other intriguing phenomena regarding their carrier and phonon transport will also be briefly introduced.
| Academic year | 4th year |
|---|---|
| Research Advisor | Zhifeng Ren |
