Magnetism in one-dimensional quantum dot arrays
(2005) In Physical Review B (Condensed Matter and Materials Physics) 72(16). p.165324-165330- Abstract
- We employ the density functional Kohn-Sham method in the local spin-density approximation to study the electronic structure and magnetism of quasi-one-dimensional periodic arrays of few-electron quantum dots. At small values of the lattice constant, the single dots overlap, forming a nonmagnetic quantum wire with nearly homogenous density. As the confinement perpendicular to the wire is increased, i.e., as the wire is squeezed to become more one dimensional, it undergoes a spin-Peierls transition. Magnetism sets in as the quantum dots are placed farther apart. It is determined by the electronic shell filling of the individual quantum dots. At larger values of the lattice constant, the band structure for odd numbers of electrons per dot... (More)
- We employ the density functional Kohn-Sham method in the local spin-density approximation to study the electronic structure and magnetism of quasi-one-dimensional periodic arrays of few-electron quantum dots. At small values of the lattice constant, the single dots overlap, forming a nonmagnetic quantum wire with nearly homogenous density. As the confinement perpendicular to the wire is increased, i.e., as the wire is squeezed to become more one dimensional, it undergoes a spin-Peierls transition. Magnetism sets in as the quantum dots are placed farther apart. It is determined by the electronic shell filling of the individual quantum dots. At larger values of the lattice constant, the band structure for odd numbers of electrons per dot indicates that the array could support spin-polarized transport and therefore act as a spin filter. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/838110
- author
- Kärkkäinen, Kimmo ; Koskinen, Matti ; Reimann, Stephanie LU and Manninen, Matti
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 72
- issue
- 16
- pages
- 165324 - 165330
- publisher
- American Physical Society
- external identifiers
-
- wos:000232934900073
- scopus:29644436599
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.72.165324
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
- id
- 5a0b8e07-f4a6-49a5-83d6-a62752fb0192 (old id 838110)
- date added to LUP
- 2016-04-01 15:26:29
- date last changed
- 2022-01-28 05:21:39
@article{5a0b8e07-f4a6-49a5-83d6-a62752fb0192,
abstract = {{We employ the density functional Kohn-Sham method in the local spin-density approximation to study the electronic structure and magnetism of quasi-one-dimensional periodic arrays of few-electron quantum dots. At small values of the lattice constant, the single dots overlap, forming a nonmagnetic quantum wire with nearly homogenous density. As the confinement perpendicular to the wire is increased, i.e., as the wire is squeezed to become more one dimensional, it undergoes a spin-Peierls transition. Magnetism sets in as the quantum dots are placed farther apart. It is determined by the electronic shell filling of the individual quantum dots. At larger values of the lattice constant, the band structure for odd numbers of electrons per dot indicates that the array could support spin-polarized transport and therefore act as a spin filter.}},
author = {{Kärkkäinen, Kimmo and Koskinen, Matti and Reimann, Stephanie and Manninen, Matti}},
issn = {{1098-0121}},
language = {{eng}},
number = {{16}},
pages = {{165324--165330}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Magnetism in one-dimensional quantum dot arrays}},
url = {{http://dx.doi.org/10.1103/PhysRevB.72.165324}},
doi = {{10.1103/PhysRevB.72.165324}},
volume = {{72}},
year = {{2005}},
}