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Browse Prior Art Database

Superconductor Memory

IP.com Disclosure Number: IPCOM000083083D
Original Publication Date: 1975-Mar-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Chaudhari, P: AUTHOR

Abstract

Type II superconductors have flux lines which can be used for storage of information. A device is provided using flux lines for storing information and persistent currents for generating a propagating or guiding pattern.

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Superconductor Memory

I

Type II superconductors have flux lines which can be used for storage of information. A device is provided using flux lines for storing information and persistent currents for generating a propagating or guiding pattern.

A pattern of Type II superconductor with magnetic overlay is fabricated which is brought into contact (at the surface) with a storage medium in its normal state. The sandwich is cooled below the superconducting transition temperature of the superconductor. Persistent currents are generated in the storage mediums which are directly related to the magnetic field distribution in the magnetic overlay.

The persistent currents generate a guiding structure so that the flux lines propagate along the desired path. If required, the persistent current propagation structure can be stabilized by a controlled introduction of pinning points. II

It has been shown that flux lines in a superconductor plate move perpendicular to the direction of current flow. A structure can be fabricated of tubular form and film current passed from the outer edge to the inner hole, which moves the flux lines in a circular trajectory along one of the guiding paths.

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