Strange behavior of persistent currents in small Hubbard rings
Santanu K. Maiti, J. Chowdhury, and S. N. Karmakar
TL;DR
This paper investigates the unusual oscillatory behavior of persistent currents in small Hubbard rings, revealing how interactions influence current behavior differently in half-filled versus non-half-filled systems.
Contribution
It provides an exact analysis of persistent currents in small Hubbard rings, highlighting anomalous oscillations and the impact of electron filling on mobility.
Findings
Persistent currents show kink-like structures and anomalous oscillations.
Singular behavior of persistent current can disappear under certain conditions.
Mobility decreases to zero in half-filled systems with interaction, but remains finite in non-half-filled systems.
Abstract
We show exactly that small Hubbard rings exhibit unusual kink-like structures giving anomalous oscillations in persistent current. Singular behavior of persistent current disappears in some cases. In half-filled systems mobility gradually drops to zero with interaction, while it converges to some finite value in non-half-filled cases.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.