Josephson Soliton Memory
Original Publication Date: 1983-Sep-01
Included in the Prior Art Database: 2005-Feb-07
Josephson solitons are isolated flux vortices which can be created and propagated in long Josephson junctions. An example of such junctions are elongated superconductors separated by an elongated tunneling barrier across which Josephson current can flow. When an electric field is impressed across the superconductors, the solitons can be made to propagate along the elongated junction. A random-access memory (RAM) cell and memory circuits using these cells are described. RAM Cell A RAM cell is formed by two soliton devices A and B, as shown in Fig. 1. Overlying the devices are current-carrying lines 10 and 12, for carrying currents Ix and Iy, respectively. Device B stores the information as either a binary 1 or binary 0, while device A is used to obtain access to the stored information.