Magnetic Response in Mesoscopic Hubbard Rings: A Mean Field Study

Details Magnetic Response in Mesoscopic Hubbard Rings: A Mean Field Study Magnetic Response in Mesoscopic Hubbard Rings: A Mean Field Study

2010-05-25

arxiv.org/abs/1005.4608v3

Solid State Communications, Volume 150, Issues 45-46, December 2010, Pages 2212-2217

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 8 figures

Scientific paper

10.1016/j.ssc.2010.09.041

The present work proposes an idea to remove the long standing controversy between the calculated and measured current amplitudes carried by a small conducting ring upon the application of an Aharonov-Bohm (AB) flux $\phi$. Within a mean field Hartree-Fock (HF) approximation we numerically calculate persistent current, Drude weight, low-field magnetic susceptibility and related issues. Our analysis may be inspiring for studying magnetic response in nano-scale loop geometries.

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