Magnetism in artificial lattices

Kärkkäinen, K., Borgh, M. ORCID:, Manninen, M. and Reimann, S. M. (2007) Magnetism in artificial lattices. European Physical Journal D, 43 (1-3). pp. 225-228. ISSN 1434-6060

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We compare magnetism in two artificial lattice structures, a quantum dot array formed in a two-dimensional electron gas and an optical lattice loaded with repulsive, contact-interacting fermionic atoms. When the tunneling between the lattice sites is strong, both lattices are non-magnetic. With reduced tunneling in the tight-binding limit, the shell-filling of the single-site quantum wells combined with Hund's rule determines the magnetism. This leads to a systematic magnetic phase diagram with non-magnetic, ferromagnetic and antiferromagnetic phases.

Item Type: Article
Uncontrolled Keywords: atomic and molecular physics, and optics ,/dk/atira/pure/subjectarea/asjc/3100/3107
Faculty \ School: Faculty of Science > School of Physics
UEA Research Groups: Faculty of Science > Research Groups > Centre for Photonics and Quantum Science
Faculty of Science > Research Groups > Quantum Fluids
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Depositing User: LivePure Connector
Date Deposited: 06 Feb 2023 15:30
Last Modified: 17 Feb 2023 10:31
DOI: 10.1140/epjd/e2007-00098-4

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