The importance of global band topology is unequivocally recognized in condensed matter
physics, and new states of matter, such as topological insulators, have been discovered …

This review compiles results of experimental and theoretical studies on thin films and
quantum structures of semiconductors with randomly distributed Mn ions, which exhibit …

One of the intriguing properties characteristic to three-dimensional topological materials is
the topological magnetoelectric phenomena arising from a topological term called the θ …

Topological insulators are bulk electronic insulators with symmetry-protected gapless modes
on their surfaces,,,,. Breaking time-reversal symmetry in these systems via ferromagnetism …

The two-dimensional electron systems in graphene and in topological insulators are
described by massless Dirac equations. Although the two systems have similar …

To achieve and use the most exotic electronic phenomena predicted for the surface states of
3D topological insulators (TIs), it is necessary to open a “Dirac-mass gap” in their spectrum …

Topological insulators are a newly discovered class of materials in which helical conducting
modes exist on the surface of a bulk insulator,,,,,. Recently, theoretical works have shown …

We study theoretically the role of quenched magnetic disorder at the surface of topological
insulators by numerical simulation and scaling analysis based on the massive Dirac fermion …

We study the physics of the superconducting variant of Weyl semimetals, which may be
realized in multilayer structures comprising topological insulators and superconductors. We …

Magnetic topological insulators such as Cr-doped (Bi, Sb) 2Te3 provide a platform for the
realization of versatile time-reversal symmetry-breaking physics. By constructing …