Abstract
We illustrate an approach based on itinerant magnetism for finding ferromagnetic semiconductors that can be gate tuned to study quantum critical points. We show that -type is an example. The complex nonparabolic band structure of this material leads to a ferromagnetic instability when doped, while at the same time allowing for a modest transport effective mass. This leads to an analogy between magnetic semiconductors and thermoelectric materials.
- Received 1 September 2019
- Revised 15 November 2019
DOI:https://doi.org/10.1103/PhysRevB.101.020404
©2020 American Physical Society