55 citations · 629 across the 39 of their papers we have counts for
43 papers
Steering of topological criticality in the Su-Schrieffer-Heeger chain via non-Hermitian substitutional impurities
Juan A. Cañas, Guo-Qing Zhang, A. Martín-Ruiz
We investigate the topological phase in a one-dimensional Su-Schrieffer-Heeger (SSH) chain in the presence of a finite concentration of non-Hermitian substitutional impurities. Our…
Linear and nonlinear transport responses of topological nodal-line semimetals
L. E. Sosa-Arias, A. Martín-Ruiz
Topological nodal-line semimetals are three-dimensional quantum materials characterized by band crossings that form closed loops in momentum space. In -symmetric real…
Magnetic-field-activated transport from band geometry in gapped nodal-line semimetals
L. Medel Onofre, L. E. Sosa-Arias, A. Martín-Ruiz
We develop a nonperturbative semiclassical theory of magnetotransport in gapped nodal-line semimetals, retaining the full magnetic-field dependence of Berry-curvature and orbital-m…
Non-Hermitian impurity scattering in graphene: Boltzmann transport and thermoelectric response
Juan A. Cañas, Daniel A. Bonilla, A. Martín-Ruiz
We investigate charge and thermoelectric transport in monolayer graphene containing a dilute distribution of finite-range non-Hermitian scattering centers. The impurities are model…
Disorder-induced modulation of the nonlinear Hall effect in Weyl semimetals
Juan A. Cañas, Daniel A. Bonilla, A. Martín-Ruiz
We study the effects of impurity scattering on the nonlinear Hall response of Weyl semimetals within the semiclassical Boltzmann approach. We derive the rectified and second-harmon…
Electromagnetic coupling and transport in a topological insulator-graphene hetero-structure
Daniel A. Bonilla, Jorge David Castaño-Yepes, A. Martín-Ruiz +1
The electromagnetic coupling between hetero-structures made of different materials is of great interest, both from the perspective of discovering new phenomena, as well as for its…
Exact classical limit of the quantum bouncer
Juan A. Cañas, J. Bernal, A. Martín-Ruiz
In this paper we develop a systematic approach to determine the classical limit of periodic quantum systems and applied it successfully to the problem of the quantum bouncer. It is…
Testing the scalar sector of the Standard-Model Extension with neutron gravity experiments
C. A. Escobar, A. Martín-Ruiz, A. M. Escobar-Ruiz +1
In the present study we analyse, within the scalar sector of the Standard-Model Extension (SME) framework, the influence of a spontaneous Lorentz symmetry breaking on gravitational…
Testing the equivalence principle with time-diffracted free-falling quantum particles
Juan A. Cañas, J. Bernal, A. Martín-Ruiz
The equivalence principle of gravity is examined at the quantum level using the diffraction in time of matter waves in two ways. First, we consider a quasi-monochromatic beam of pa…
Ground state and polarization of an hydrogen-like atom near a Weyl semimetal
Jorge David Castaño-Yepes, D. J. Nader, A. Martín-Ruiz
In this paper we study the effects of a topological Weyl semimetal (WSM) upon the ground state and polarization of an hydrogen-like atom near its surface. The WSM is assumed to be…
Scalar Casimir effect for a conducting cylinder in a Lorentz violating background
A. M. Escobar-Ruiz, A. Martín-Ruiz, Escobar C. A. +1
Following a field-theoretical approach, we study the scalar Casimir effect upon a perfectly conducting cylindrical shell in the presence of spontaneous Lorentz symmetry breaking. T…
Quantized electrochemical transport in Weyl semimetals
R. Flores-Calderón, A. Martín-Ruiz
We show that under the effect of an external electric field and a gradient of chemical potential, a topological electric current can be induced in Weyl semimetals without inversion…
Fano resonances induced by the topological magnetoelectric effect
L. A. Castro-Enriquez, A. Martín-Ruiz
We investigate the interaction between a topological insulator nanoparticle and a quantum dot in an impulse magnetic field. Since topological insulators are nonmagnetic, after the…
On the four-body problem in the Born-Oppenheimer approximation
C. A. Escobar, A. Martín-Ruiz
The quantum problem of four particles in (), with arbitrary masses and , interacting through an harmonic oscillator potential is consider…
Lorentz violating scalar Casimir effect for a -dimensional sphere
A. Martín-Ruiz, C. A. Escobar, A. M. Escobar-Ruiz +1
We investigate the Casimir effect, due to the confinement of a scalar field in a -dimensional sphere, with Lorentz symmetry breaking. The Lorentz-violating part of the theory is…
Optical response of a topological-insulator--quantum-dot hybrid interacting with a probe electric field
L. A. Castro-Enriquez, L. F. Quezada, A. Martín-Ruiz
We study the interaction between a topological insulator nanoparticle and a quantum dot subject to an applied electric field. The electromagnetic response of the topological insula…
A non-perturbative approach to the scalar Casimir effect with Lorentz symmetry violation
C. A. Escobar, A. Martín-Ruiz, O. J. Franca +1
We determine the effect of Lorentz invariance violation in the vacuum energy and stress between two parallel plates separated by a distance , in the presence of a massive real s…
Casimir effect in Lorentz-violating scalar field theory: a local approach
C. A. Escobar, Leonardo Medel, A. Martín-Ruiz
We study the Casimir effect in the classical geometry of two parallel conductive plates, separated by a distance , for a Lorentz-breaking extension of the scalar field theory. T…
Casimir effect in polymer scalar field theory
C. A. Escobar, E. Chan-López, A. Martín-Ruiz
In this paper, we study the Casimir effect in the classical geometry of two parallel conducting plates, separated by a distance , due to the presence of a minimal length ari…
Magnetoelectric effect of a conducting sphere near a planar topological insulator
A. Martín-Ruiz, Omar Rodríguez-Tzompantzi, J. R. Maze +1
When time-reversal symmetry is broken on its surface, topological insulators exhibit a magnetoelectric response which is described by axion electrodynamics. A direct consequence of…
Quantum phase transition of two-level atoms interacting with a finite radiation field
L. F. Quezada, A. Martín-Ruiz, A. Frank
We introduce a group-theoretical extension of the Dicke model which describes an ensemble of two-level atoms interacting with a finite radiation field. The latter is described by a…
Gravitational Searches for Lorentz Violation with Ultracold Neutrons
C. A. Escobar, A. Martín-Ruiz
We investigate the consequences of Lorentz violation (as expressed within the gravity sector of the Standard-Model Extension) for gravitational quantum states of ultracold neutrons…
Parity Anomaly in the non-linear response of Nodal-Line Semimetals
Alberto Martín-Ruiz, Alberto Cortijo
Nodal-line semimetals are topological semimetals characterized by one-dimensional band-touching loops protected by the combined symmetry of inversion and time-reversa…
Electromagnetic fields induced by an electric charge near a Weyl semimetal
A. Martín-Ruiz, M. Cambiaso, L. F. Urrutia
Weyl semimetals (WSM) are a new class of topological materials that exhibit a bulk Hall effect due to time-reversal symmetry breaking, as well as a chiral magnetic effect due to in…