Raman electron paramagnetic resonance inZn1−xCrxTeandCd1−xCrxTe

• DOI: 10.1103/physrevb.75.155206
• Publication Date: 2007-04-25T17:11:57Z
• Authors: X. Lu; S. Tsoi; I. Miotkowski; S. Rodriguez; A. K. Ramdas; H. Alawadhi
• Keywords: Center (category theory)

Raman electron paramagnetic resonance (Raman-EPR) of the transitions due to spin flip $3d$ electrons ${\mathrm{Cr}}^{+}$ in ${\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{Cr}}_{x}\mathrm{Te}$ and ${\mathrm{Cd}}_{1\ensuremath{-}x}{\mathrm{Cr}}_{x}\mathrm{Te}$ is observed at $\ensuremath{\hbar}{\ensuremath{\omega}}_{PM}=g({\mathrm{Cr}}^{+}){\ensuremath{\mu}}_{B}\mathrm{B}$ with $g({\mathrm{Cr}}^{+})=2.0041\ifmmode\pm\else\textpm\fi{}0.0095$ $2.0039\ifmmode\pm\else\textpm\fi{}0.0093$, respectively. The appearance lines ${\ensuremath{\omega}}_{LO}\ifmmode\pm\else\textpm\fi{}n{\ensuremath{\omega}}_{PM}$, $n=1$, 2, 3 results from strong Fr\"ohlich interaction zone-center longitudinal-optic phonon. intensity Raman-EPR can be enhanced through photogeneration process by simultaneous illumination photons having an energy close excitonic band gap; photoluminescence spectra reveal signatures excitons bound acceptors specimens. profile shows that resonant enhancement mediated via exciton a neutral acceptor.