Document Type
Article
Department/Program
Physics
Journal Title
Physical Review B
Pub Date
2015
Volume
92
Issue
4
Abstract
Some Kondo insulators are expected to possess topologically protected surface states with linear Dirac spectrum: the topological Kondo insulators. Because the bulk states of these systems typically have heavy effective electron masses, the surface states may exhibit extraordinarily small Fermi velocities that could force the effective fine structure constant of the surface states into the strong coupling regime. Using a tight-binding model, we study the many-body instabilities of these systems and identify regions of parameter space in which the system exhibits spin density wave and charge density wave order.
Recommended Citation
Triola, Christopher; Balatsky, Alexander V.; Zhu, Jian-Xin; and Zhu, Jian-Xin, Many-body instabilities and mass generation in slow Dirac materials (2015). Physical Review B, 92(4).
10.1103/PhysRevB.92.045401
DOI
10.1103/PhysRevB.92.045401
