Stabilization of ground-state minimal spin in disordered quantum dots

Kenji Hirose, Ned S. Wingreen

Research output: Contribution to journalConference articlepeer-review


We investigate the ground-state spin and energy of disordered quantum dots using spin-density-functional theory. With increasing interaction strength, the probability of non-minimal spin increases, but never exceeds 50%. Within a two-orbital model, we show that the off-diagonal Coulomb matrix elements help stabilize a ground state of minimal spin by creating a low-energy hybridization of the various minimal-spin basis states.

Original languageEnglish (US)
Pages (from-to)79-80
Number of pages2
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number1-3
StatePublished - May 2003
Event23rd International Conference on Low Temperature Physics - Hiroshima, Japan
Duration: Aug 20 2002Aug 27 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics


  • Ground-state spin
  • Quantum dot
  • Spin-density-functional theory


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