Abstract
We present a general scheme for finding the exact eigenstates of two electrons, with on-site repulsive potentials (Formula presented) on I impurities in a macroscopic crystal. The model describes impurities in doped semiconductors and artificial “molecules” in quantum dots. For quantum dots, the energy cost for adding two electrons is bounded by the single-electron spectrum, and does not diverge when (Formula presented) implying limitations on the validity of the Coulomb blockade picture. Analytic applications for (Formula presented) on a one-dimensional chain yield quantum delocalization and magnetic transitions.
Original language | English |
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Pages (from-to) | 5452-5456 |
Number of pages | 5 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 61 |
Issue number | 8 |
DOIs | |
State | Published - 1 Jan 2000 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics