Static impurity in a mesoscopic system of SU ( N ) fermionic matter waves
Year: 2026
Type: article
Abstract: We investigate the effects of a static impurity, modeled by a localized barrier, in a one-dimensional mesoscopic system comprised of strongly correlated repulsive SU ( N ) -symmetric fermions. For a mesoscopic sized ring under the effect of an artificial gauge field, we analyze the energy spectrum, the particle density, and the current flowing through the impurity at varying interaction strengths, barrier heights, and number of components. We find that the physics of the system is governed by the competition between effective single-particle process and the formation of a high-stiffness spin-correlated state associated with the phenomenon of fractionalization of the flux quantum characterizing the N -component fermionic system. Our findings provide a route to probe the response of SU ( N ) fermions to effective magnetic fields; at the same time, they hold significance for fundamental understanding of localized impurity problems.
Source: Physical Review Research
DOI: 10.1103/tcmp-nf52
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
OpenAlex ID: W4404985805