SrMnSb2
Magnetic Dirac semimetal
Structure
Crystal Image
Crystal structure
Topview (along the out-of-plane direction)
Structural property summary
- Single crystal form: silver color, metallic luster, square/rectangle facets
- Structure type: layered, orthorhombic, Pnma
- Air sensitivity: greyish powder forms on long time exposure
- Exfoliation capability: yes but not easy
- Note: the Sr and Mn sites can have vacancies, which affect the properties.
Transport Properties
Resistivity- Temperature dependence
- metallic
Magnetoresistance
Note: very strong quantum oscillation. Frequency ~ 70T, depending on Sr and Mn stoichiometry
Magnetic Properties
Attention: The Mn and Sb non-stoichiometry affects the magnetic properties.
Magnetization- field dependence
- Below 304K: AFM
- 304 – 565K: FM
- FM behavior in MH is owing to the canted AFM moment
dHvA oscillations
Specific Heat
Specific Heat data to be added