Physics – Condensed Matter – Materials Science
Scientific paper
2001-11-27
Phys. Rev. Lett. 88, 207204 (2002)
Physics
Condensed Matter
Materials Science
4 pages and 3 figures
Scientific paper
10.1103/PhysRevLett.88.207204
A strong influence of illumination and electric bias on the Curie temperature and saturation value of the magnetization is demonstrated for semiconductor structures containing a modulation-doped p-type Cd0.96Mn0.04Te quantum well placed in various built-in electric fields. It is shown that both light beam and bias voltage generate an isothermal and reversible cross-over between the paramagnetic and ferromagnetic phases, in the way that is predetermined by the structure design. The observed behavior is in quantitative agreement with the expectations for systems, in which ferromagnetic interactions are mediated by the weakly disordered two-dimensional hole liquid.
Bertolini Matteo
Boukari Hacene
Cibert Joel
Dietl Tomasz
Ferrand Daniel
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