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Spontaneously broken time-reversal symmetry in quantum dots.

Steffens, Oliver, Rössler, Ulrich and Suhrke, Michael (1998) Spontaneously broken time-reversal symmetry in quantum dots. Europhysics Letters 44 (2), pp. 222-228.

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Date of publication of this fulltext: 05 Aug 2009 13:28

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Other URL: http://www.edpsciences.org/articles/epl/abs/1998/20/44216/44216.html


We present current-spin density-functional calculations for circular parabolic quantum dots in zero magnetic field. We find the possibility for broken time-reversal symmetry via exchange correlation with spontaneously induced orbital currents. For certain electron numbers, this results in new current textures which give rise to a finite magnetization even for ground states with vanishing total angular momentum.

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Item type:Article
Institutions:Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Ulrich Rössler
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Dewey Decimal Classification:500 Science > 530 Physics
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:1372
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