New zinc-blende structural modifications of MnSe and MnTe grown by molecular beam epitaxy offer unique examples of strongly frustrated FCC Heisenberg antiferromagnets. These systems can be obtained either in the form of strained superlattices with significant strain-induced anisotropy in the Mn-Mn exchange, or of nearly isotropic semi-bulk MnTe single films. Neutron diffraction studies show that The strain changes the phase transition order and the domain structure normally seen in unstrained lattices, and in some cases (MnSe/ZnTe superlattices) even produces a transition to an entirely new incommensurate helical spin structure.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering