The eigenvalues of a parameter-dependent Hamiltonian matrix form a band structure in parameter space. In such N-band systems, the quantum geometric tensor (QGT), consisting …
We study the unconventional topological phases of polaritons inside a cavity waveguide, demonstrating how strong light-matter coupling leads to a breakdown of the bulk-edge …
As lattice analogs of fractional quantum Hall systems, fractional Chern insulators (FCIs) exhibit enigmatic physical properties resulting from the intricate interplay between single …
The geometric interpretation of (pseudo) spin-1/2 systems on the Bloch sphere has been appreciated across different areas ranging from condensed matter to quantum information …
Narrow-band electron systems are particularly likely to exhibit correlated many-body phases driven by interaction effects. Examples include magnetic materials, heavy-fermion systems …
We classify the topology of the quench dynamics by homotopy groups. A relation between the topological invariant of a postquench order parameter and the topological invariant of a …
Calculating the observables of a Hamiltonian requires taking matrix elements of operators in the eigenstate basis. Since eigenstates are only defined up to arbitrary phases that depend …
The family of hole-doped Pr-based perovskite cobaltites, Pr 0.5 Ca 0.5 CoO 3 and (Pr 1− y RE y) 0.3 Ca 0.7 CoO 3 (where RE is rare earth), has recently been found to exhibit …
ZG Song, YY Zhang, JT Song, SS Li - Scientific reports, 2016 - nature.com
The quantum anomalous Hall system with Chern number 2 can be destroyed by sufficiently strong disorder. During its process towards localization, it was found that the electronic …