Mn-doped II-VI quantum dots: artificial molecular magnets
arXiv:cond-mat/0702139 · doi:10.1002/pssc.200671504
Abstract
The notion of artifical atom relies on the capability to change the number of carriers one by one in semiconductor quantum dots, and the resulting changes in their electronic structure. Organic molecules with transition metal atoms that have a net magnetic moment and display hysteretic behaviour are known as single molecule magnets (SMM). The fabrication of CdTe quantum dots chemically doped with a controlled number of Mn atoms and with a number of carriers controlled either electrically or optically paves the way towards a new concept in nanomagnetism: the artificial single molecule magnet. Here we study the magnetic properties of a Mn-doped CdTe quantum dot for different charge states and show to what extent they behave like a single molecule magnet.
Conference article presented at QD2006, Chamonix, May 2006
References in corpus (11)
- A single-electron transistor made from a cadmium selenide nanocrystal
- Tunneling in suspended carbon nanotubes assisted by longitudinal phonons
- Light and electric field control of ferromagnetism in magnetic quantum structures
- Geometrical effects on the optical properties of quantum dots doped with a single magnetic atom
- Ferromagnetism mediated by few electrons in a semimagnetic quantum dot
- Single exciton spectroscopy of semimagnetic quantum dots
- Optically Induced Magnetization of CdMnTe Self-Assembled Quantum Dots
- Tunnel Magneto-resistance in GaMnAs: going beyond Jullière formula
- Voltage-tunable ferromagnetism in semimagnetic quantum dots with few particles: magnetic polarons and electrical capacitance
- Selective optical manipulation of the spin state of a single magnetic impurity in a semiconductor quantum dot
- A theory of ferromagnetism in planar heterostructures of (Mn,III)-V semiconductors