FIR properties of II–VI semimagnetic semiconductors with iron

Submilimeter Magnetospectroscopy on ZnFeSe

“…1 we display resonant energies observed experimentally as a function of magnetic field. The previously observed [3,4] transitions Α1 -T1 and Α1 -Ε are clearly visible also for higher x, although the spectra are broader than those obtained for low x. The experimental energies match well the calculated energy level differences for isolated, i.e.…”

“…In ZnFeSe, calculated energy of this transition is about 8-9 cm -1 [5]. An increasing contribution of pair and larger clusters to FIR absorption should be expected for x > 0.03 and is indeed exhibited by the changes of FIR absorption spectra shape [6,3] as well as by the temperature variation of the spectra (Fig. 2).…”

“…Α useful tool to study this structure is far infrared (FIR) spectroscopy [1,2]. Recently, an investigation of Fe-type SMSC has been reported [3,4], however it dealt with rather low Fe concentrations. In this paper we present complementary results of FIR 1aser spectroscopy for Ζn 1 -x Fex Se (x < 0.06) in the temperature range 2 < Τ < 26 K and magnetic fields up to 18 Τ.…”