Materials can harbour quantum many-body systems, most typically in the form of strongly
correlated electrons in solids, that lead to novel and remarkable functions thanks to …

Topological insulators are new states of quantum matter which cannot be adiabatically
connected to conventional insulators and semiconductors. They are characterized by a full …

The strongly spin-momentum coupled electronic states in topological insulators (TI) have
been extensively pursued to realize efficient magnetic switching. However, previous studies …

Recent demonstrations of magnetization switching induced by in-plane current in heavy
metal/ferromagnetic heterostructures (HMFHs) have drawn great attention to spin torques …

We report successful spin injection into the surface states of topological insulators by using a
spin pumping technique. By measuring the voltage that shows up across the samples as a …

Weyl fermions were originally proposed as massless Dirac fermions in relativistic quantum
field theory. In solids, Weyl fermions often appear when either time-reversal symmetry or …

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 …

The combination of topological insulators, that is, bulk insulators with gapless, topologically
protected surface states, with magnetic order is a love-hate relationship that can unlock new …

We study collective behavior of magnetic adatoms randomly distributed on the surface of a
topological insulator. Interactions of an ensemble of adatoms are frustrated, as the RKKY …

Topological insulators are new states of matter with a bulk gap and robust gapless surface
states protected by time-reversal symmetry. When time-reversal symmetry is broken, the …