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Inductive microwave response of Yu-Shiba-Rusinov states
Cecilie Hermansen, Alfredo Levy Yeyati, Jens Paaske
We calculate the frequency-dependent admittance of a phase-biased Josephson junction spanning a magnetic impurity or a spinful Coulomb-blockaded quantum dot. The local magnetic mom…
Signatures of interactions in the Andreev spectrum of nanowire Josephson junctions
F. J. Matute-Cañadas, C. Metzger, Sunghun Park +7
We performed microwave spectroscopy of an InAs nanowire between superconducting contacts implementing a finite-length, multi-channel Josephson weak link. Certain features in the sp…
Transient dynamics of a magnetic impurity coupled to superconducting electrodes: exact numerics versus perturbation theory
R. Seoane Souto, A. E. Feiguin, A. Martín-Rodero +1
Impurities coupled to superconductors offer a controlled platform to understand the interplay between superconductivity, many-body interactions, and non-equilibrium physics. In the…
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…
Fluxoid-induced pairing suppression and near-zero modes in quantum dots coupled to full-shell nanowires
Samuel D. Escribano, Alfredo Levy Yeyati, Ramón Aguado +2
We analyze the subgap excitations and phase diagram of a quantum dot (QD) coupled to a semiconducting nanowire fully wrapped by a superconducting (S) shell. We take into account ho…
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…