The power absorption and the penetration depth of electromagnetic radiation in lead telluride under cyclotron resonance conditions

Cyclotron resonance absorption in n- and p-type PbTe was observed by Nii an d was analysed under classical skin effect conditions. When the values of D C magnetic field corresponding to peaks are plotted against the held direct ions, a close fit is obtained between the calculated and observed results b ased on the assumption of a [111] ellipsoids of revolution model for the bo th conduction and valance band extrema. From the best fit m(t) = 0.024m(0) and 0.03m(0) for the transverse effective masses and K = m(1)/m(t) = 9.8 an d 12.2 for the anisotropic mass rations are obtained for the conduction and valance band, respectively. The observed absorption curve shows weak struc tures at low magnetic field. They are supposed to be due to second harmonic s of Azbel'-Kaner cyclotron resonance. However, it turns out to be unnecess ary to introduce other bands to explain the experimental results. The appli cability of the classical magneto-optical theory is examined by calculating the power absorption coefficient and penetration depth as a function of DC magnetic field. (C) 1999 Elsevier Science B.V. All rights reserved.