100 citations · 827 across the 42 of their papers we have counts for
42 papers
Channel-selective magnetic filtering in a nodal-line semimetal
Hironmoy Pratihar, Alessandro De Martino, Arijit Kundu
We study quantum transport through a magnetic barrier in a nodal-line semimetal. When the Fermi energy lies near the nodal ring, the Fermi surface has toroidal geometry. Each cross…
Phonon-driven nodal surface superconductivity of Fermi arcs
Francesco Buccheri, Alessandro de Martino, Jeroen van den Brink
According to recent observations, the topological surface states of Weyl semimetals may develop a superconducting gap, while bulk superconductivity remains absent. What drives the…
Toroidal Fermi-surface geometry and phonon-limited transport in nodal-line semimetals
Aman Anand, Alessandro De Martino
Nodal-line semimetals (NLSs) can display unconventional quasiparticle dynamics and charge transport properties due to their extended band degeneracy and the peculiar geometry of th…
Angular-momentum-selective nanofocusing with Weyl semimetals
Marco Peluso, Alessandro De Martino, Reinhold Egger +1
We investigate the theory of surface plasmon polaritons on a magnetic Weyl semimetal conical tip. We show that the axion term in the effective electrodynamics modifies the surface…
Quantum description of Fermi arcs in Weyl semimetals in a magnetic field
Tim Bauer, Francesco Buccheri, Alessandro De Martino +1
For a Weyl semimetal (WSM) in a magnetic field, a semiclassical description of the Fermi-arc surface state dynamics is usually employed for explaining various unconventional magnet…
Interfaces of nodal-line semimetals: drum states, transport and refraction
Mattia Rudi, Alessandro De Martino, Kristof Moors +2
We study transport through interfaces in topological nodal-line semimetals, focusing on two geometries: a single interface between two large samples, one nodal-line semimetal and o…
Dispersive Drumhead States in Nodal-Line Semimetal Junctions
Francesco Buccheri, Reinhold Egger, Alessandro De Martino
We consider a smooth interface between a topological nodal-line semimetal and a topologically trivial insulator (e.g., the vacuum) or another semimetal with a nodal ring of differe…
Two-channel Kondo problem in coupled interacting helical liquids
Sourav Biswas, Alessandro De Martino, Sumathi Rao +1
We study the two-channel Kondo problem in the context of two interacting helical liquids coupled to a spin- magnetic impurity. We show that the interactions between the tw…
Chiral spin channels in curved graphene junctions
Dario Bercioux, Diego Frustaglia, Alessandro De Martino
We show that the chiral modes in circular graphene junctions provide an advantage for spin manipulation via spin-orbit coupling compared to semiconductor platforms. We derive…
Two-dimensional Dirac fermions in a mass superlattice
A. De Martino, L. Dell'Anna, L. Handt +2
We study two-dimensional (2D) Dirac fermions in the presence of a periodic mass term alternating between positive and negative values along one direction. This scenario could be re…
Transport, refraction and interface arcs in junctions of Weyl semimetals
Francesco Buccheri, Reinhold Egger, Alessandro De Martino
We study the low-energy single-electron transport across a junction of two magnetic Weyl semimetals, in which the anisotropy axes are tilted one respect to the other. Using a two-b…
Phonon-limited Transport and Fermi Arc Lifetime in Weyl Semimetals
Francesco Buccheri, Alessandro De Martino, Rodrigo G. Pereira +2
Weyl semimetals harbor topological Fermi-arc surface states which determine the nontrivial charge current response to external fields. We here study the quasiparticle decay rate of…
Phase diagram and phonon-induced backscattering in topological insulator nanowires
Kathrin Dorn, Alessandro De Martino, Reinhold Egger
We present an effective low-energy theory of electron-phonon coupling effects for clean cylindrical topological insulator nanowires. Acoustic phonons are modelled by isotropic elas…
Superconductivity from piezoelectric interactions in Weyl semimetals
Rodrigo G. Pereira, Francesco Buccheri, Alessandro De Martino +1
We present an analytical low-energy theory of piezoelectric electron-phonon interactions in undoped Weyl semimetals, taking into account also Coulomb interactions. We show that pie…
Two-electron bound states near a Coulomb impurity in gapped graphene
A. De Martino, R. Egger
We formulate and solve the perhaps simplest two-body bound state problem for interacting Dirac fermions in two spatial dimensions. A two-body bound state is predicted for gapped gr…
Chiral interface states in graphene - junctions
L. Cohnitz, A. De Martino, W. Häusler +1
We present a theoretical analysis of unidirectional interface states which form near - junctions in a graphene monolayer subject to a homogeneous magnetic field. The semiclas…
Scattering theory and ground-state energy of Dirac fermions in graphene with two Coulomb impurities
D. Klöpfer, A. De Martino, D. Matrasulov +1
We study the physics of Dirac fermions in a gapped graphene monolayer containing two Coulomb impurities. For the case of equal impurity charges, we discuss the ground-state energy…
Electric dipole induced universality for Dirac fermions in graphene
A. De Martino, D. Kloepfer, D. Matrasulov +1
We study electric dipole effects for massive Dirac fermions in graphene and related materials. The dipole potential accomodates towers of infinitely many bound states exhibiting a…
Landau levels, edge states, and strained magnetic waveguides in graphene monolayers with enhanced spin-orbit interaction
A. De Martino, A. Hütten, R. Egger
The electronic properties of a graphene monolayer in a magnetic and a strain-induced pseudo-magnetic field are studied in the presence of spin-orbit interactions (SOI) that are art…
Magnetic superlattice and finite-energy Dirac points in graphene
Luca Dell'Anna, Alessandro De Martino
We study the band structure of graphene's Dirac-Weyl quasi-particles in a one-dimensional magnetic superlattice formed by a periodic sequence of alternating magnetic barriers. The…
Transient fluctuation relations for time-dependent particle transport
A. Altland, A. De Martino, R. Egger +1
We consider particle transport under the influence of time-varying driving forces, where fluctuation relations connect the statistics of pairs of time reversed evolutions of physic…
Fluctuation relations and rare realizations of transport observables
A. Altland, A. De Martino, R. Egger +1
Fluctuation relations establish rigorous identities for the nonequilibrium averages of observables. Starting from a general transport master equation with time-dependent rates, we…
Spin-orbit coupling and spectral function of interacting electrons in carbon nanotubes
A. Schulz, A. De Martino, R. Egger
The electronic spin-orbit coupling in carbon nanotubes is strongly enhanced by the curvature of the tube surface and has important effects on the single-particle spectrum. Here, we…
Spin-resolved scattering through spin-orbit nanostructures in graphene
D. Bercioux, A. De Martino
We address the problem of spin-resolved scattering through spin-orbit nanostructures in graphene, i.e., regions of inhomogeneous spin-orbit coupling on the nanometer scale. We disc…