| Issue |
EPL
Volume 87, Number 6, September 2009
|
|
|---|---|---|
| Article Number | 67004 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/87/67004 | |
| Published online | 01 October 2009 | |
Anapole moment and spin-electric interactions in rare-earth nanoclusters
1
A.M. Prokhorov General Physics Institute of Russian Academy of Sciences 38 Vavilov Str. 119991 Moscow, Russia
2
Moscow Institute of Electronic Technology - 5 Pas. 4806, 124498 Zelenograd, Moscow, Russia
3
Ikerbasque Foundation for Science - 48011 Bilbao, Spain, EU
Corresponding author: dmitry.plokhov@gmail.com
Received:
27
August
2009
Accepted:
15
September
2009
Spin-electric interactions and magnetoelectric properties of triangular rare-earth molecular nanoclusters are investigated by the example of Dy3. The effective spin-electric Hamiltonian is derived on the base of a developed quantum-mechanical model of the cluster spin structure. It is shown that a toroidal (anapole) moment is induced in such clusters with magnetic field exceeding some threshold value or with crossed electric and magnetic fields (or an electric current). Due to the considerable relaxation time of the state with non-zero toroidal moment, it is possible to observe the non-equilibrium quantum linear magnetoelectric effect.
PACS: 75.80.+q – Magnetomechanical and magnetoelectric effects, magnetostriction / 36.40.-c – Atomic and molecular clusters
© EPLA, 2009
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