Electron focusing in metals by magnetic field

● The theory of effects of electron focusing in metals by a magnetic field for various experimental situations has been developed. It was shown, that this method can be used for studying of a crystallographic structure of a metal surface, an interaction of charge carriers with boundary between a normal metal and a superconductor, an electron scattering on flat defects, etc. [1].

● The processes of relaxation of strongly non-equilibrium electrons in bismuth had been investigated by the electron focusing method: the relaxation in a microcontact [2], on a cyclotron trajectory [3], at a surface [4]. First the diffraction of a flow of weakly non-equilibrium electrons had been found in a bismuth crystal by means of electron focusing method [5].

1. Kolesnichenko Yu.A. Electron focusing in metals (Review) // Sov. J. Low Temp. Phys. 18, No.10, 741-759 (1992).
2. Andrievskii V.V., Ass E.I., and Komnik Yu.F. Relaxation of energized electrons during transverse focusing in bismuth // Sov. J. Low Temp. Phys. 16, 179 (1990).
3. Andrievskii V.V., Ass E.I., and Komnik Yu.F. Cyclotron spectroscopy of electron-phonon relaxation at point contacts // JETP Lett. 47, No.2, 125 (1988).
4. Andrievskii V.V., Komnik Yu.F. Rozhok S.V. Surface energy relaxation of conduction electrons in bismuth using transverse electron focusing technique // Low Temp. Phys. 23, 225 (1997).
5. Andrievskii V.V., Komnik Yu.F., and Rozhok S.V. Electron flow diffraction in a point contact // Phys. Rev. B. 56, No.7, 4023-4027 (1997).