Condensed matter systems admit topological collective excitations above a trivial ground
state, an example being Chern insulators formed by Dirac bosons with a gap at finite …

In this paper, we study the spin Nernst effect of magnons in the nonlinear response regime.
We derive the formula for the nonlinear magnon spin Nernst current by solving the …

We investigate the dynamical evolution of a parity-time (PT) symmetric extension of the
Aubry-André (AA) model, which exhibits the coincidence of a localization-delocalization …

We investigate the effects of nonuniform uniaxial strain and triaxial strain on the α-T 3 lattice.
The analytical expressions of the pseudo-Landau levels (pLLs) are derived based on low …

Topological bosonic excitations must, in contrast to their fermionic counterparts, appear at
finite energies. This is a key challenge for magnons, as it prevents straightforward excitation …

Nonuniform elastic strain is known to induce pseudo-Landau levels in Dirac materials. But
these pseudo-Landau levels are hardly resolvable in an analytic fashion when the strain is …

The Loschmidt amplitude of the purified states of mixed-state density matrices is shown to
have zeros when the system undergoes a quasistatic, quench, or Uhlmann process. While …

We propose magnonic analogs of topological crystalline insulators which possess Dirac
surface states protected by the combined symmetry of time reversal and half translation …

By deriving a general framework and analyzing concrete examples, we demonstrate a class
of dynamical quantum phase transitions (DQPTs) in one-dimensional two-band systems …

A kagome lattice is composed of corner-sharing triangles arranged on a honeycomb lattice
such that each honeycomb bond hosts a kagome site while each kagome triangle encloses …