2003/12/18 by J. Fernández‐Rossier, J. Fernández-Rossier, Carlo Piermarocchi +4 · 44 citations
Materials Science · Physics and Astronomy · #Band gap #Coherence (philosophical gambling strategy) #Condensed matter physics #Conduction band #Diamond and Carbon-based Materials Research #Electron #Ferromagnetism #Magnetic semiconductor #Materials science #Nuclear physics #Optoelectronics #Physics #Quantum and electron transport phenomena #Semiconductor #Semiconductor Quantum Structures and Devices #Valence (chemistry) #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.93.127201
published in Physical Review Letters 93(12), 127201 (American Physical Society) · 11 pages, 2 figures, preprint style
arxiv created 2003/12/18 · openalex publication_date 2004/09/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Ferromagnetism is predicted in undoped diluted magnetic semiconductors illuminated by intense sub-band-gap laser radiation. The mechanism for photoinduced ferromagnetism is coherence between conduction and valence bands induced by the light which leads to an optical exchange interaction. The ferromagnetic critical temperature T(C) depends both on the properties of the material and on the frequency and intensity of the laser and could be above 1K.