Abstract
ThCr2Si2-type NdMn2Ge2 was recently proposed to be a magnetic skyrmion candidate exhibiting the topological Hall effect. In this work, we report magnetic, electronic, and thermoelectric measurements for NdMn2Ge2 single crystals. We show that, in the canted antiferromagnetic phase and the conical magnetic phase with a large out-of-plane ferromagnetic component, this system exhibits both an anomalous Nernst effect and a topological Nernst effect. We argue that NdMn2Ge2 is a unique magnetic material, with its topological characteristics associated with the Berry phases in both real space and momentum space.
| Original language | English |
|---|---|
| Article number | 064430 |
| Journal | Physical Review B |
| Volume | 108 |
| Issue number | 6 |
| DOIs | |
| State | Published - Aug 1 2023 |
Funding
X.K. acknowledges the financial support provided by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division (Grant No. DE-SC0019259). P.Z. acknowledges the financial support provided by the National Science Foundation (Grant No. DMR-2112691). C.X. is partially supported by the startup funds at Michigan State University. A portion of this research used resources at the High Flux Isotope Reactor, the DOE Office of Science User Facility, operated by the Oak Ridge National Laboratory.