140 citations · 396 across the 13 of their papers we have counts for
13 papers
Superconductivity Mediated by Nematic Fluctuations in Tetragonal
Pranab Kumar Nag, Kirsty Scott, Vanuildo S. de Carvalho +10
Nematic phases, where electrons in a solid spontaneously break rotational symmetry while preserving the translational symmetry, exist in several families of unconventional supercon…
Topological transition from nodal to nodeless Zeeman splitting in altermagnets
Rafael M. Fernandes, Vanuildo S. de Carvalho, Turan Birol +1
In an altermagnet, the symmetry that relates configurations with flipped magnetic moments is a rotation. This makes it qualitatively different from a ferromagnet, where no such sym…
Multipolar spin liquid in an exactly solvable model for moments
Vanuildo S. de Carvalho, Hermann Freire, Rodrigo G. Pereira
We study an exactly solvable model with bond-directional quadrupolar and octupolar interactions between spin-orbital entangled moments on the honey…
Superconductivity near a nematoelastic quantum critical point
Vanuildo S. de Carvalho, Hermann Freire
We study the pairing instability of a two-dimensional metallic system induced by Ising-nematic quantum fluctuations in the presence of an unavoidable relevant coupling of the nemat…
Charge orders, magnetism and pairings in the cuprate superconductors
T. Kloss, X. Montiel, V. S. de Carvalho +2
We review the recent developments in the field of cuprate superconductors with the special focus on the recently observed charge order in the underdoped compounds. We introduce new…
Coexistence of -loop-current order with checkerboard d-wave CDW/PDW order in a hot-spot model for cuprate superconductors
Vanuildo S. de Carvalho, Catherine Pépin, Hermann Freire
We investigate the strong influence of the -loop-current order on both unidirectional and bidirectional d-wave charge-density-wave/pair-density-wave (CDW/PDW) composite ord…
Strong competition between -loop-current order and -wave charge order along the diagonal direction in a two-dimensional hot spot model
Vanuildo S. de Carvalho, Thomas Kloss, Xavier Montiel +2
We study the fate of the so-called -loop-current order that breaks both time-reversal and parity symmetries in a two-dimensional hot spot model with antiferromagnetically m…
Renormalization group analysis of the pair-density-wave and charge order within the fermionic hot-spot model for cuprate superconductors
Hermann Freire, Vanuildo S. de Carvalho, Catherine Pépin
In light of the new experimental and theoretical important developments in high- superconductivity, we revisit the fermionic hot-spot model relevant to the phenomenology of th…
Pseudogap, charge order, and pairing density wave at the hot spots in cuprate superconductors
C. Pépin, V. S. de Carvalho, T. Kloss +1
We address the timely issue of the presence of charge ordering at the hot-spots in the pseudo-gap phase of cuprate superconductors in the context of an emergent SU(2)-symmetry whic…
Evidence of a short-range incommensurate -wave charge order from a fermionic two-loop renormalization group calculation of a 2D model with hot spots
Vanuildo S. de Carvalho, Hermann Freire
The two-loop renormalization group (RG) calculation is considerably extended here for the two-dimensional (2D) fermionic effective field theory model, which includes only the so-ca…
Breakdown of Fermi liquid behavior near the hot spots in a two-dimensional model: A two-loop renormalization group analysis
Vanuildo S. de Carvalho, Hermann Freire
Motivated by a recent experimental observation of a nodal liquid on both single crystals and thin films of BiSrCaCuO by Chatterjee \emph{et al.} [Nature Physics…
Conserved sandpile with a variable height restriction
Vanuildo Silva de Carvalho, Alvaro de Almeida Caparica, Ronald Dickman
We study a restricted-height version of the one-dimensional Oslo sandpile with conserved density, using periodic boundary conditions. Each site has a limiting height which can be e…
Complete renormalization group calculation up to two-loop order of an effective two-band model for iron-based superconductors
Vanuildo S. de Carvalho, Hermann Freire
We perform a renormalization group (RG) study up to two-loop order of an effective low-energy two-band model to describe some of the recently discovered iron-based superconductors.…