SPONTANEOUSLY BROKEN TIME-REVERSAL SYMMETRY IN QUANTUM DOTS

Authors
STEFFENS O SUHRKE M ROSSLER U
Citation
O. Steffens et al., SPONTANEOUSLY BROKEN TIME-REVERSAL SYMMETRY IN QUANTUM DOTS, Europhysics letters (Print), 44(2), 1998, pp. 222-228
Citations number
26
Categorie Soggetti
Physics
Journal title
Europhysics letters (Print) → ACNP
ISSN journal
02955075
Volume
44
Issue
2
Year of publication
1998
Pages
222 - 228
Database
ISI
SICI code
0295-5075(1998)44:2<222:SBTSIQ>2.0.ZU;2-5
Abstract
We present current-spin density-functional calculations for circular p arabolic quantum dots in zero magnetic field. We find the possibility for broken time-reversal symmetry via exchange correlation with sponta neously induced orbital currents. For certain electron numbers, this r esults in new current textures which give rise to a finite magnetizati on even for ground states with vanishing total angular momentum.