Multi-Particle Tunneling Transport at Strongly-Correlated Interfaces

TL;DR

This paper investigates multi-particle tunneling phenomena at strongly correlated interfaces, revealing how pair- and spin-tunneling processes contribute to anomalous currents in various physical systems.

Contribution

It provides a microscopic derivation of multi-particle tunneling processes without empirical parameters, expanding understanding of transport in strongly correlated systems.

Findings

Multi-particle tunneling processes naturally arise from microscopic models.

Anomalous tunneling currents are explained by pair-tunneling mechanisms.

The formulation applies across disciplines like atomtronics, spintronics, and nuclear physics.

Abstract

We elucidate the multi-particle transport of pair- and spin-tunnelings in strongly correlated interfaces. Not only usual single-particle tunneling but also interaction-induced multi-particle tunneling processes naturally arise from a conventional microscopic model without any empirical parameters, through the overlap of the many-body wave functions around the interface. We demonstrate how anomalous tunneling currents occur in a strongly interacting system due to the pair-tunneling process which we derived microscopically. Our formulation is useful for junction systems in various disciplines, including atomtronics, spintronics, and nuclear reactions.