Separation of ballistic-type and wave-type electromagnetic excitations in a metal
Galkin A. A., Tsymbal L. T., Cherkasov A. N.
The effects of ballistic and wave penetration of an electromagnetic field into a metal, which are caused by the Doppler-shifted cyclotron resonance of the same group of carriers at the Fermi surface, were observed and separated (using tungsten) simultaneously for the first time in our work by using an ultrasonic method. The unique features of both types of excitations, which reflect their different interactions with sound, are determined.