Topological states of matter in non-Hermitian systems have attracted a lot of attention due to
their intriguing dynamical and transport properties. In this paper, we propose a periodically …

Topological phases of matter have remained an active area of research in the last few
decades. Periodic driving is a powerful tool for enriching such exotic phases, leading to …

Second-order topological insulators (SOTI) exhibit protected gapless boundary states at
their hinges or corners. In this paper, we propose a generic means to construct SOTIs in …

We theoretically study the electromagnetic response of type-I and type-II centrosymmetric
Weyl metals. We derive an anisotropic permittivity tensor with off-diagonal elements to …

The double kicked rotor model is a physically realizable extension of the paradigmatic
kicked rotor model in the study of quantum chaos. Even before the concept of Floquet …

α-Sn is well known as a typical Luttinger semimetal with a quadratic band touching at the Γ
point. Based on the effective k· p analysis as well as first-principles calculations, we …

Type-II Weyl semimetals have recently attracted intensive research interest because they
host Lorentz-violating Weyl fermions as quasiparticles. The discovery of type-II Weyl …

Floquet topological matter has emerged as one exciting platform to explore rich physics and
game-changing applications of topological phases. As one remarkable and recently …

Floquet states of periodically driven systems could exhibit rich topological properties. Many
of them are absent in their static counterparts. One such example is the chiral edge states in …

Dynamical kicking systems possess rich topological structures. In this work we study Floquet
states of matter in a non-Hermitian extension of the double-kicked rotor model. Under the on …