Electrical control of magnetic quantum wells: Monte Carlo simulations
| Autor: | M. A. Boselli, Rafal Oszwaldowski, Igor Žutić, I. C. da Cunha Lima, E. Dias Cabral |
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| Rok vydání: | 2011 |
| Předmět: |
Physics
Spintronics Condensed matter physics Magnetism Doping Monte Carlo method Magnetic semiconductor Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Ferromagnetism Curie temperature Condensed Matter::Strongly Correlated Electrons Order of magnitude |
| Zdroj: | Physical Review B. 84 |
| ISSN: | 1550-235X 1098-0121 |
| Popis: | We use Monte Carlo simulations to analyze electric-field control of Curie temperature ${T}_{C}$ for carrier-mediated ferromagnetism in semiconductors. Gating employed to achieve electrostatic doping in an optimized geometry of (Ga, Mn)As, a prototypical ferromagnetic semiconductor, reveals a highly tunable ferromagnetic order. We show the feasibility of $\ensuremath{\Delta}{T}_{C}g100$ K, an order of magnitude greater then the state-of-the-art measurements, at fields substantially smaller then the breakdown values. Such controllable ferromagnetism may help elucidate the mechanism of carrier-mediated magnetism in various semiconductors and offer versatile spintronic applications. |
| Databáze: | OpenAIRE |
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