Paananen, Tomi; Gerber, Henning; Götte, Matthias; Dahm, Thomas: Appearance of flat surface bands in three-dimensional topological insulators in a ferromagnetic exchange field. In: New Journal of Physics. Jg.16 H. 3. 2014
Inhalt
- 1. Introduction
- 2. Models
- 3. Symmetry considerations
- 4. Nonequivalent surface boundaries
- 5. Model I
- 5.1. Boundary perpendicular to the y-direction with finite Vy
- 5.2. Boundary perpendicular to the y-direction with finite Vx
- 5.3. Existence of a two-dimensional flat band
- 5.4. Boundary perpendicular to the y-direction with finite Vz
- 5.5. Existence of a one-dimensional flat band
- 5.6. Weyl semimetal
- 5.7. Boundary perpendicular to the z-direction
- 6. Model II
- 7. Effect of broken particle–hole symmetry
- 7.1. Model I with boundary perpendicular to the y-direction
- 7.2. Model I with boundary perpendicular to the z-direction
- 7.3. Model II with boundary perpendicular to the z-direction
- 8. Summary and conclusions
- Acknowledgments
- Appendix A
- Appendix B
- Appendix C
- References