A unified expression for topological invariants was proposed recently to describe the topological order in Dirac models belonging to any dimension and symmetry class. We …
The quantum geometry in the momentum space of semiconductors and insulators, described by the quantum metric of the valence-band Bloch state, has been an intriguing …
W Chen, AP Schnyder - New Journal of Physics, 2019 - iopscience.iop.org
In topological insulators and topological superconductors, the discrete jump of the topological invariant upon tuning a certain system parameter defines a topological phase …
The correlation functions related to topological phase transitions in inversion-symmetric lattice models described by 2× 2 Dirac Hamiltonians are discussed. In one dimension, the …
Critical phase transitions contain a variety of deep and universal physics and are intimately tied to thermodynamic quantities through scaling relations. Yet, these notions are …
The investigation and characterization of topological quantum phase transition between gapless phases is one of the recent interest of research in topological states of matter. We …
K Sim, R Chitra, P Molignini - Physical Review B, 2022 - APS
We employ quench dynamics as an effective tool to probe different universality classes of topological phase transitions. Specifically, we study a model encompassing both Dirac-like …
We demonstrate that the prototypical two-dimensional Chern insulator hosts exotic quantum multicriticality in the presence of an appropriate periodic driving: a linear Dirac-like transition …
The notion of fidelity susceptibility, introduced within the context of quantum metric tensor, has been an important quantity to characterize the criticality near quantum phase transitions …