29 citations · 100 across the 9 of their papers we have counts for
9 papers
Symmetry-induced even/odd parity in charge and heat pumping
Miguel A. N. Araújo, Pedro Ninhos, Pedro Ribeiro
It is shown that the presence of discrete symmetries in Floquet systems connected to metallic reservoirs imprints a definite parity on the charge and heat pumping as a function of…
Broken-symmetry phases of interacting nested Weyl and Dirac loops
Miguel A. N. Araújo, Linhu Li
We study interaction-induced broken symmetry phases that can arise in metallic or semimetallic band structures with two nested Weyl or Dirac loops. The odered phases can be of the…
Engineering topological phases with a three-dimensional nodal-loop semimetal
Linhu Li, Han Hoe Yap, Miguel A. N. Araújo +1
A three-dimensional (3D) nodal-loop semimetal phase is exploited to engineer a number of intriguing phases featuring different peculiar topological surface states. In particular, b…
Chiral topological insulating phases from three-dimensional nodal loop semimetals
Linhu Li, Chuanhao Yin, Shu Chen +1
We identify a topological Z index for three dimensional chiral insulators with P*T symmetry where two Hamiltonian terms define a nodal loop. Such systems may belong in the AIII or…
Topological insulating phases from two-dimensional nodal loop semimetals
Linhu Li, Miguel A. N. Araújo
Starting from a minimal model for a 2D nodal loop semimetal, we study the effect of chiral mass gap terms. The resulting Dirac loop anomalous Hall insulator's Chern number is the p…
A theorem regarding families of topologically non-trivial fermionic systems
Bruno Mera, Miguel A. N. Araújo, Vítor R. Vieira
We introduce a Hamiltonian for fermions on a lattice and prove a theorem regarding its topological properties. We identify the topological criterion as a topologica…
Andreev spectroscopy of Majorana states in topological superconductors with multipocket Fermi surfaces
Ana C. Silva, Miguel A. N. Araújo, Pedro D. Sacramento
The topological properties of a multiband topological superconductor in two dimensions are studied, when the latter is obtained by introducing electron pairing in an otherwise topo…
In-plane magnetic field vs. temperature phase diagram of a quasi-2D frustrated multiband superconductor
A. M. Marques, R. G. Dias, M. A. N. Araújo +1
Motivated by the recent discovery of iron-based superconductors, with high critical temperatures and multiple bands crossing the Fermi level, we address the conditions for the pres…
Change of an insulator's topological properties by a Hubbard interaction
Miguel A. N. Araújo, Eduardo V. Castro, Pedro D. Sacramento
We introduce two dimensional fermionic band models with two orbitals per lattice site, or one spinful orbital, and which have a non-zero topological Chern number that can be change…