Investigation of a possible electronic phase separation in the magnetic semiconductors Ga${}_{1-x}$Mn${}_x$As and Ga${}_{1-x}$Mn${}_x$P by means of fluctuation spectroscopy

Martin Lonsky, Jan Teschabai-Oglu, Klaus Pierz +6

We present systematic temperature-dependent resistance noise measurements on a series of ferromagnetic Ga${}_{1-x}$Mn${}_x$As epitaxial thin films covering a large parameter space in…