20 citations · 129 across the 17 of their papers we have counts for
17 papers
Charge and spin qubits in interacting quantum dots coupled to Rashba-active leads
Grazia Di Bello, Fabrizio Pavan, Mattia Trama +3
We present a unified study of charge and spin qubits encoded in a single interacting quantum dot tunnel-coupled to Rashba fermionic leads. The dot is described by an Anderson impur…
Engineering superconductivity on the surface of Weyl semimetals
Riccardo Vocaturo, Mattia Trama
Ten years after the experimental discovery of Weyl semimetals, theoretical and experimental work has pointed to the possibility of realizing surface-only superconductivity at relat…
Spin Hall and Edelstein effects in a ballistic quantum dot with Rashba spin-orbit coupling
Alfonso Maiellaro, Francesco Romeo, Mattia Trama +11
We study spin-resolved transport in a ballistic quantum dot with Rashba spin-orbit coupling, focusing on charge-to-spin conversion and spin Hall effect. In the regime where the dot…
Inhomogeneous superconductivity in (001), (110), and (111) KTaO two-dimensional electronic gases: effect of electronic confinement on the transition temperature
Mattia Trama, Roberta Citro, Carmine Antonio Perroni
Experimental observations on KTaO superconductivity report widely different critical temperatures with a clear hierarchy among different crystallographic orientations. Accounti…
Boltzmann theory of the inverse Edelstein effect in a two-dimensional Rashba gas
Irene Gaiardoni, Mattia Trama, Alfonso Maiellaro +3
We investigate the inverse Edelstein effect in a non-homogeneous system consisting of a ferromagnetic layer coupled to a Rashba two-dimensional electron gas. Within a semiclassical…
Theory of charge-to-spin conversion under quantum confinement
Alfonso Maiellaro, Francesco Romeo, Mattia Trama +6
The interplay between spin and charge degrees of freedom in low-dimensional systems is a cornerstone of modern spintronics, where achieving all-electrical control of spin currents…
Edelstein Effect in Isotropic and Anisotropic Rashba Models
Irene Gaiardoni, Mattia Trama, Alfonso Maiellaro +3
We investigate spin-to-charge conversion via the Edelstein effect in a 2D Rashba electron gas using the semiclassical Boltzmann approach. We analyze the magnetization arising from…
Non-linear anomalous Edelstein response at altermagnetic interfaces
Mattia Trama, Irene Gaiardoni, Claudio Guarcello +5
In altermagnets, time-reversal symmetry breaking spin-polarizes electronic states, while total magnetization remains zero. In addition, at altermagnetic surfaces Rashba-spin orbit…
Self-consistent surface superconductivity in time-reversal symmetric Weyl semimetals
Mattia Trama, Viktor Könye, Ion Cosma Fulga +1
Weyl semimetals host topologically protected surface states, the so-called Fermi arcs, that have a penetration depth into the bulk that depends on surface-momentum, and diverges at…
Probing Topological Superconductivity of oxide nanojunctions using fractional Shapiro steps
Claudio Guarcello, Alfonso Maiellaro, Jacopo Settino +4
We theoretically discuss the emergence of fractional Shapiro steps in a Josephson junction created by confining a two-dimensional electron gas at an oxide interface. This phenomeno…
Dirac-like fermions anomalous magneto-transport in a spin-polarized oxide two-dimensional electron system
Yu Chen, Maria D'Antuono, Mattia Trama +8
In two-dimensional electron systems (2DES) the breaking of the inversion, time-reversal and bulk crystal-field symmetries is interlaced with the effects of spin-orbit coupling (SOC…
Engineered Josephson diode effect in kinked Rashba nanochannels
Alfonso Maiellaro, Mattia Trama, Jacopo Settino +3
The superconducting diode effect, reminiscent of the unidirectional charge transport in semiconductor diodes, is characterized by a nonreciprocal, dissipationless flow of Cooper pa…
Large nonlinear Hall effect and Berry curvature in KTaO3 based two-dimensional electron gas
Jinfeng Zhai, Mattia Trama, Hao Liu +6
The two-dimensional electron gas (2DEG) at oxide interfaces exhibits various exotic properties stemming from interfacial inversion symmetry breaking. In this work, we report the em…
Effect of confinement and Coulomb interactions on the electronic structure of (111) LaAlO/SrTiO interface
Mattia Trama, Vittorio Cataudella, Carmine Antonio Perroni +2
A tight binding supercell approach is used for the calculation of the electronic structure of the (111) LaAlO/SrTiO interface. The confinement potential at the interface is…
Tunable spin and orbital Edelstein effect at (111) LaAlO/SrTiO interface
Mattia Trama, Vittorio Cataudella, Carmine Antonio Perroni +2
Converting charge current into spin current is one of the main mechanisms exploited in spintronics. One prominent example is the Edelstein effect, namely the generation of a magnet…
Gate tunable anomalous Hall effect: a Berry curvature probe at oxides interfaces
Mattia Trama, Carmine Antonio Perroni, Vittorio Cataudella +2
The characterization and the experimental measurement of the Berry curvature in solids have become an increasingly relevant task in condensed matter physics. We present the theoret…
Strain-induced topological phase transition at (111) SrTiO-based heterostructures
Mattia Trama, Carmine Antonio Perroni, Vittorio Cataudella
The quasi-two-dimensional electronic gas at the (111) SrTiO-based heterostructure interfaces is described by a multi-band tight-binding model providing electronic bands in agre…