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Research PaperNo Access

Nanograin ferromagnets from nonmagnetic bulk materials: The case of gold nanoclusters

Department of Theoretical Physics, University of Debrecen, H-4010 Debrecen, Bem ter 18/B, Hungary

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and

Department of Theoretical Physics, University of Debrecen, H-4010 Debrecen, Bem ter 18/B, Hungary

E-mail Address: gulacsi@phys.unideb.hu

Corresponding author.

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https://doi.org/10.1142/S0217979221501484Cited by:3 (Source: Crossref)

Abstract

The ferromagnetism of Au nanograins is analyzed based on a two-dimensional itinerant lattice model with on-site Coulomb repulsion, many-body spin–orbit interactions, and holding two hybridized bands, one correlated and one uncorrelated. Using periodic boundary conditions in both directions, an exact ferromagnetic ground state is deduced for this non-integrable system by applying special techniques based on positive semidefinite operators.

Keywords:

PACS: 71.10.−w, 71.10.Fd, 71.27.+a, 71.70.Ej, 75.10.−b, 75.75.−c

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Vol. 35, No. 10

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History

Received 25 February 2021

Revised 8 April 2021

Accepted 18 April 2021

Published: 31 May 2021

Keywords