Cyclotron resonance observation on the electron lenses of molybdenum Fermi surface

Using a previously described transmission method, cyclotron resonance of electrons on the lens of the Fermi surface of molybdenum was observed. The resonance signals were recorded in Azbel-Kaner configuration with the magnetic field B parallel to the (110) plane of a monocrystal of thickness d = 0.15 mm.The effective mass of the electrons was determined as $\text{m>}{}^1\text{= (0.183 ± 0.002)m}{}_0\text{; m}{}^1\text{= (0.261 ± 0.008)m}{}_0$ and $\text{m}{}^1\text{= (0.29 ± 0.02)m}{}_0$ for B at angles of 0°; 3°; and 7.4° with respect to the crystallographical 〈110〉 direction. For these orientations of B and applying the method of cyclotron resonance cut-off observation, the dimensions of the electron lens were determined.