| Popis: |
We describe an original scheme of Magnetic Cellular Automata consisting of cells made of diluted magnetic semiconductor (DMS) material. The magnetic phase of the cell (paramagnetic/ferromagnetic) is controlled by hole injection via the effect of hole-mediated ferromagnetism. Being in the ferromagnetic phase, the cell is suitable for binary information encoding (spins up or spins down). We propose to exploit hole-mediated ferromagnetism (and the phase transition from paramagnetic to ferromagnetic behavior) for electric-field driven magnetic cellular automata. The operation of the proposed cellular automata is illustrated by numerical modeling. Potentially, the proposed scheme may be beneficial in terms of power consumption (>fJ for one operation). It also makes possible to accomplish different image processing functions on one fabricated substrate. The disadvantages and shortcomings of the proposed scheme are discussed. |
