Work

Local analysis of a single impurity on a graphene Josephson junction

Year: 2025

Type: article

Abstract: In this paper, we investigate the local effects of a single impurity on the electron system of a short ballistic graphene Josephson junction. Within the Dirac–Bogoliubov–de Gennes approach, we systematically analyze the local electron density of states. Its behavior at subgap energies allows one to distinguish elastic and inelastic scattering processes and to identify the magnetic nature of the impurity. Moreover, the spatial dependence of the local density of states is a sensitive probe of microscopic processes yielding subgap impurity-induced bound states. The Fourier analysis allows one to recognize the wave vectors related to the momenta of the high-transmissive channels in ballistic graphene.

Source: Physical Review Research

DOI: 10.1103/physrevresearch.7.013189

Authors: Ignazio Vacante, Francesco M. D. Pellegrino, G. G. N. Angilella, Giuseppe A. Falci, Elisabetta Paladino

Institutions: Istituto Nazionale di Fisica Nucleare, University of Catania, Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Institute for Microelectronics and Microsystems, Centro Siciliano di Fisica Nucleare e di Struttura della Materia

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: Università di Catania, Universität Ulm, Center for Integrated Quantum Science and Technology, Ministero dell'Università e della Ricerca