ABRIKOSOV VORTEX FLOW TRANSISTORS

In Abrikosov superconducting flux flow transistors the voltage at the terminals of microbridges across which vortices run is modulated by th e magnetic field generated by the current flowing in a near-by control line. In this paper the basic principles of these components are deve lopped and the relation between the change in the critical current of the microbridges and the control magnetic field is established as well as the factors determining the transistor gain. The connection betwee n the different types of current-voltage characteristics which are mea sured on the microbridges and the different regimes which are possible for the vortex motion is developped, emphazising the importance of th e pinning phenomenon. The feasibility of the device is discussed.