TitleLocal moment formation in quantum point contacts.
Publication TypeJournal Article
Year of Publication2003
AuthorsHirose, K, Meir, Y, Wingreen, NS
JournalPhys Rev Lett
Date Published2003 Jan 17

Spin-density-functional theory of quantum point contacts (QPCs) reveals the formation of a local moment with a net of one electron spin in the vicinity of the point contact-supporting the recent report of a Kondo effect in a QPC. The hybridization of the local moment to the leads decreases as the QPC becomes longer, while the on site Coulomb-interaction energy remains almost constant.

Alternate JournalPhys. Rev. Lett.