Electrical Control of a Single Mn Atom in a Quantum Dot
Abstract
We report on the reversible electrical control of the magnetic properties of a single Mn atom in an individual quantum dot. Our device permits us to prepare the dot in states with three different electric charges, 0, +1e, and -1e which result in dramatically different spin properties, as revealed by photoluminescence. Whereas in the neutral configuration the quantum dot is paramagnetic, the electron-doped dot spin states are spin rotationally invariant and the hole-doped dot spins states are quantized along the growth direction.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 2006
- DOI:
- 10.1103/PhysRevLett.97.107401
- Bibcode:
- 2006PhRvL..97j7401L
- Keywords:
-
- 78.67.Hc;
- 75.75.+a;
- 78.55.Et;
- Quantum dots;
- Magnetic properties of nanostructures;
- II-VI semiconductors