ANISOTROPIC MOMENTUM-TRANSFER IN LOW-DIMENSIONAL ELECTRON-SYSTEMS IN A MAGNETIC-FIELD

In low-dimensional systems with an asymmetric quantizing potential, an asymmetric electron energy spectrum epsilon(p) not equal epsilon(-p), where p is the electron momentum, arises in the presence of a magneti c field. A consequence of such an energy spectrum is that momentum tra nsfer to the electron system in mutually opposite directions in the pr esence of an external perturbation is different. Therefore, in the pre sence of a standing electromagnetic wave momentum is transferred from the wave to the electrons, which gives rise to a new type of electromo tive force. (C) 1997 American Institute of Physics.