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Magnetism in artificial lattices

Kärkkäinen, Kimmo LU ; Borgh, Magnus LU ; Manninen, M and Reimann, Stephanie LU (2007) In European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 43(1-3). p.225-228
Abstract
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.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics
volume
43
issue
1-3
pages
225 - 228
publisher
EDP Sciences
external identifiers
  • wos:000246772500056
  • scopus:34249710255
ISSN
1434-6060
DOI
10.1140/epjd/e2007-00098-4
language
English
LU publication?
yes
id
788fb383-5442-4c53-ba20-685037b0d1e4 (old id 657852)
date added to LUP
2007-12-13 15:40:54
date last changed
2017-01-01 06:43:53
@article{788fb383-5442-4c53-ba20-685037b0d1e4,
  abstract     = {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.},
  author       = {Kärkkäinen, Kimmo and Borgh, Magnus and Manninen, M and Reimann, Stephanie},
  issn         = {1434-6060},
  language     = {eng},
  number       = {1-3},
  pages        = {225--228},
  publisher    = {EDP Sciences},
  series       = {European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics},
  title        = {Magnetism in artificial lattices},
  url          = {http://dx.doi.org/10.1140/epjd/e2007-00098-4},
  volume       = {43},
  year         = {2007},
}