Magnetooptical Properties of Pb_1-xMn_xSe p-n Junctions

Abstract

The first experimental evidence of the magnetic quantum oscillation in the photovoltaic effect of Pb1-x Mnx Se p-n junctions is reported. The p-n junctions were obtained in Pb1-x Mnx Se crystals with manganese content ,0 < x < 0.08 by introducing Cd donors by diffusion. Measurements were performed between 5-85 K and in the presence of the magnetic field 0-7 T in the Faraday and Voigt configurations of the incident infrared radiation of various photon energies in the vicinity of the energy gap of a Pb1-x Mnx Se. Strong oscillatory behavior of the photovoltage was observed as a function of the magnetic field intensity at a constant wavelength of the incident light. Using the model of Adler of the energy band structure modified by the exchange terms, and after identification of the initial and final states of the transitions, we derive the band parameters of the Pb1-xM n xS e crystals.

Suppression of Mn photoluminescence in ferromagnetic state of Mn-doped ZnS nanocrystals

“…5 This is expected to bring forth new vistas to the optical studies of these materials. Several studies have been reported on excitonic [6][7][8][9][10][11] and some on internal Mn-PL intensity 12,13 as functions of magnetic field and temperature. [14][15][16] However, while the sp-d exchange interaction is known to lead to magnetic ordering in DMS, 4,5,17 no studies to the best of our knowledge have been reported that show effect of magnetic ordering on internal Mn-PL emission.…”