- By:
- Yumnam, George ; Moseley, Duncan H; Paddison, Joseph A; Polash, Md; Vashaee, Daryoosh; Granroth, Garrett E; Suggs, Christiana; Zappala, Emma; Parker, David S; Zhao, Huaizhou; Manley, Michael E; Frandsen, Benjamin A.; Hermann, Raphael P; McGuire, Michael A
- Journal Name:
- Physical Review B
- Page Number:
- 214434
- Volume:
- 109
- Issue Number:
- 21
- Publication Date:
- July 9, 2024
- View DOI Listing:
- https://doi.org/10.1103/PhysRevB.109.214434
Abstract
Manganese telluride (MnTe) is a prospective platform for ultrafast carrier dynamics, spin-based thermoelectrics, and magnon-drag transport due to its unique electronic and magnetic properties. We use inelastic neutron scattering to study both pure and lithium-doped MnTe, focusing on the influence of doping in opening a magnon gap. We use neutron powder diffraction to determine critical exponents for the phase transition in both pure and Li-doped MnTe and complement this information with muon spin rotation/relaxation. The opening of the magnon gap and spin reorientation in Li-doped MnTe is mainly due to increased magnetic anisotropy along the [001] axis, a feature not present in pure MnTe.
