40 citations · 475 across the 47 of their papers we have counts for
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The intermediate type-I superconductors in the mesoscopic scale
Leonardo R. Cadorim, Edson Sardella, Antonio R. de C. Romaguera +3
M. Tinkham and P. G. de Gennes, described in their books the existence of an intermediate type-I superconductor as a consequence of an external surface that affects the well known…
Strong pinning in the hole-doped pnictide superconductor LaNaFeAs
Shyam Sundar, S. Salem-Sugui, A. D. Alvarenga +5
We present magnetization studies as a function of time, temperature and magnetic field for c-axis, in a hole-doped pnictide superconductor, LaNaFe…
Weyl states and Fermi arcs in parabolic bands
Mauro M. Doria, Andrea Perali
Weyl fermions are shown to exist inside a parabolic band, where the kinetic energy of carriers is given by the non-relativistic Schroedinger equation. There are Fermi arcs as a dir…
Shape-resonant superconductivity in nanofilms: from weak to strong coupling
Marco Cariglia, Alfredo A. Vargas-Paredes, Mauro M. Doria +3
Ultrathin superconductors of different materials are becoming a powerful platform to find mechanisms for enhancement of superconductivity, exploiting shape resonances in different…
Paramagnetic excited vortex states in superconductors
Rodolpho Ribeiro Gomes, Mauro M. Doria, Antonio R. de C. Romaguera
We consider excited vortex states, which are vortex states left inside a superconductor once the external applied magnetic field is switched off and whose energy is lower than of t…
Multigap superconductivity and interaction driven resonances in superconducting nanofilms with an inner potential barrier
Mauro M. Doria, Marco Cariglia, Andrea Perali
We study the crossover in a zero temperature superconducting nanofilm from a single to a double superconducting slab induced by a tunable insulating potential barrier in the middle…
Zero helicity states in the interface
Edinardo I. B. Rodrigues, Alfredo A. Vargas-Paredes, Mauro M. Doria +1
We propose a kinetically driven mechanism based on the breaking of the spatial reflection symmetry to describe the magnetic moment and the torque observed by Lu-Li et al. (Ref. 1)…
Coexistence of magnetic and charge order in a two-component order parameter description of the layered superconductors
Mauro M. Doria, Alfredo A. Vargas-Paredes, Marco Cariglia
A two-component order parameter approach for the layered superconductor is shown to form a condensate with magnetic and charge degrees of freedom. This condensate is an inhomogeneo…
Is the pseudogap a topological state?
Alfredo. A. Vargas-Paredes, Marco Cariglia, Mauro M. Doria
We conjecture that the pseudogap is an inhomogeneous condensate above the homogeneous state whose existence is granted by topological stability. We consider the simplest possible o…
Evidence for skyrmions in the high-temperature superconductors
Alfredo A. Vargas-Paredes, Marco Cariglia, Mauro M. Doria +2
We claim that the charge density wave recently found by resonant soft x-ray scattering in layered copper oxides is the tetragonal symmetry defined by the distance between neighbor…
Topologically stable gapped state in a layered superconductor
Marco Cariglia, Alfredo A. Vargas-Paredes, Mauro M. Doria
We show that a layered superconductor, described by a two-component order parameter, has a gapped state above the ground state, topologically protected from decay, containing flow…
The Principle Of Local Rotational Invariance And The Coexistence Of Magnetism, Charge And Superconductivity
Mauro M. Doria, Alfredo A. Vargas-Paredes, JosÉ A. HelayËl-Neto
We propose a macroscopic description of the superconducting state in presence of an applied external magnetic field in terms of first order differential equations. They describe a…
Little-Parks oscillations near a persistent current loop
Rodolpho Ribeiro Gomes, Isaías G. de Oliveira, Mauro M. Doria
We investigate the Little-Parks oscillations caused by a persistent current loop set on the top edge of a mesoscopic superconducting thin-walled cylinder with a finite height. For…
The ground states of the two-component order parameter superconductor
Mauro M. Doria, Antonio R. de C. Romaguera, F. M. Peeters
We show that in presence of an applied external field the two-component order parameter superconductor falls in two categories of ground states, namely, in the traditional Abrikoso…
Vortex patterns in a superconducting-ferromagnetic rod
Antonio R. de C. Romaguera, Mauro M. Doria, F. M. Peeters
A superconducting rod with a magnetic moment on top develops vortices obtained here through 3D calculations of the Ginzburg-Landau theory. The inhomogeneity of the applied field br…
Effect of the boundary condition on the vortex patterns in mesoscopic three-dimensional superconductors - disk and sphere
Mauro M. Doria, Antonio R. de C. Romaguera, F. M. Peeters
The vortex state of mesoscopic three-dimensional superconductors is determined using a minimization procedure of the Ginzburg-Landau free energy. We obtain the vortex pattern for a…
Transverse magnetization and torque in asymmetrical mesoscopic superconductors
Antonio R. de C. Romaguera, Mauro M. Doria, F. M. Peeters
We show that asymmetrical mesoscopic superconductors bring new insight into vortex physics where we found the remarkable coexistence of long and short vortices. We study an asymmet…
Threefold onset of vortex loops in superconductors with a magnetic core
Mauro M. Doria, Antonio R. de C. Romaguera, M. V. Milošević +1
A magnetic inclusion inside a superconductor gives rise to a fascinating complex of {\it vortex loops}. Our calculations, done in the framework of the Ginzburg-Landau theory, revea…
The average kinetic energy density of Cooper pairs above in , , and
S. Salem-Sugui, Mauro M. Doria, A. D. Alvarenga +3
We have obtained isofield curves for the square root of the average kinetic energy density of the superconducting state for three single crystals of underdoped ,…
The average kinetic energy density of Cooper pairs above T_c in YBa_2Cu_3O_{7-x}}, Bi_2Sr_2CaCu_2O_{8+δ}, and Nb}
S. Salem-Sugui, M. M. Doria, A. D. Alvarenga +3
We have obtained isofield curves for the square root of the average kinetic energy density of the superconducting state for three single crystals of underdoped YBa_2Cu_3O_{7-x}, an…
Vanishing of the upper critical field in Bi_2Sr_2CaCu_2O_{8+δ} from Landau-Ott scaling
Mauro M. Doria, Antonio R. de C. Romaguera, S. Salem-Sugui
We apply Landau-Ott scaling to the reversible magnetization data of BiSrCaCuO published by Y. Wang et al. [\emph{Phys. Rev. Lett. \textbf{95} 247002 (2005)}] an…
Effects of boundaries in mesoscopic superconductors
Antonio R. de C. Romaguera, Mauro M. Doria, F. M. Peeters
A thin superconducting disk, with radius and height , is studied in the presence of an applied magnetic field parallel to its major axis. We study how the boundaries in…
Vortex pattern in a nanoscopic cylinder
Antonio R. de C. Romaguera, M. M. Doria, F. M. Peeters
A superconducting nanoscopic cylinder, with radius and height is submitted to an applied field along the cylinder axis. The Ginzburg-Landau theory is solved i…
Landau and Ott scaling for the kinetic energy density and the low conventional superconductors, and Nb
Mauro M. Doria, S. Salem-Sugui, P. Badica +1
The scaling approach recently proposed by Landau and Ott for isothermal magnetization curves is extended to the average kinetic energy density of the condensate. Two low supe…