37 citations · 157 across the 13 of their papers we have counts for
13 papers
Oxide-Nitride Heteroepitaxy for Low-Loss Dielectrics in Superconducting Quantum Circuits
David A. Garcia-Wetten, Mitchell J. Walker, Peter G. Lim +9
Superconducting qubits show great promise for the realization of fault-tolerant quantum computing, but lossy, amorphous dielectrics limit current technology. Identifying highly cry…
Characterizing local Majorana properties using Andreev states
Miguel Alvarado, Alfredo Levy Yetati, Ramón Aguado +1
We propose using Andreev bound states (ABS) as spectroscopic probes to characterize Majorana zero modes (MZMs) in quantum-dot based minimal Kitaev chains. Specifically, we show tha…
Revealing inter-band electron pairing in a superconductor with spin-orbit coupling
Javier Zaldívar, Jon Ortuzar, Miguel Alvarado +8
Most superconducting mechanisms pair electrons within the same band, forming spin singlets. However, the discovery of multi-band superconductivity has opened new scenarios for pair…
Interplay between Majorana and Shiba states in a minimal Kitaev chain coupled to a superconductor
Miguel Alvarado, Alfredo Levy Yeyati, Ramón Aguado +1
Two semiconducting quantum dots (QDs) coupled through a superconductor constitute a minimal realisation of a Kitaev chain with Majorana zero modes (MZMs). Such MZMs can be detected…
Superconductivity in twisted bilayer graphene: possible pairing symmetries, impurity-induced states and Chern number
Emile Pangburn, Miguel Alvarado, Oladunjoye A. Awoga +2
We consider the most energetically favorable symmetry-allowed spin-singlet and spin-triplet superconducting pairing symmetries in twisted bilayer graphene at the magic angle, whose…
Transport features of a topological superconducting nanowire with a quantum dot: conductance and noise
Leonel Gruñeiro, Miguel Alvarado, Alfredo Levy Yeyati +1
We study two-terminal configurations in junctions between a topological superconducting wire with spin-orbit coupling and magnetic field, and an ordinary conductor with an embedded…
Intrinsic non-magnetic Josephson junctions in twisted bilayer graphene
Miguel Alvarado, Pablo Burset, Alfredo Levy Yeyati
Recent experiments have demonstrated the possibility to design highly controllable junctions on magic angle twisted bilayer graphene, enabling the test of its superconducting trans…
Yu-Shiba-Rusinov states in 2D superconductors with arbitrary Fermi contours
Jon Ortuzar, Stefano Trivini, Miguel Alvarado +5
Magnetic impurities on a superconductor induce sub-gap Yu-Shiba-Rusinov (YSR) bound states, localized at the impurity site and fading away from it for distances up to several nanom…
2D topological matter from a boundary Green's functions perspective: Faddeev-LeVerrier algorithm implementation
M. Alvarado, A. Levy Yeyati
Since the breakthrough of twistronics a plethora of topological phenomena in two dimensions has appeared, specially relating topology and electronic correlations. These systems can…
Transport and spectral properties of magic angle twisted bilayer graphene junctions based on local orbital models
M. Alvarado, A. Levy Yeyati
The electronic properties of junctions defined electrostatically on twisted bilayer graphene can be addressed theoretically using lattice models. Recent works have introduced minim…
Boundary Green's function approach for spinful single-channel and multichannel Majorana nanowires
M. Alvarado, A. Iks, A. Zazunov +2
The boundary Green's function (bGF) approach has been established as a powerful theoretical technique for computing the transport properties of tunnel-coupled hybrid nanowire devic…
Josephson effect in junctions of conventional and topological superconductors
A. Zazunov, A. Iks, M. Alvarado +2
We present a theoretical analysis of the equilibrium Josephson current-phase relation in hybrid devices made of conventional s-wave spin-singlet superconductors (S) and topological…
Josephson effect in multiterminal topological junctions
A. Zazunov, R. Egger, M. Alvarado +1
We study the Josephson effect in a trijunction formed by two topological superconductor (TS) wires and a conventional -wave superconductor. Using a boundary Green's function for…