Jozef Stefan Institute

Institut Jozef Stefan

Center of Excellence on Nanoscience and Nanotechnology—nanocenter

Center of Excellence on Nanoscience and Nanotechnology - Nanocenter, Ljubljana

Dragan Mihailovic

Igor Vaskivskyi

Ljupka Stojcevska

Damjan Svetin

Rok Venturini

Tomaz Mertelj

Anze Mraz

The invention describes a memory device which combines a switchable resistive element and a superconductor element electrically in parallel. The switchable resistive element comprises an active material, which is switchable between first and second values of electrical resistivity &#x3c1;and &#x3c1;at the same temperature, wherein &#x3c1;is different to &#x3c1;. The superconductor element is operable so that at least part of the superconductor element is switchable from a superconducting state to a non-superconducting state. When the superconductor element is switched from the superconducting state to the non-superconducting state, a current injection is provided through the switchable resistive element capable of switching the switchable resistive element between said first and second values of electrical resistivity.

Memory device and method for its operation

The invention refers to an ultrafast quench based nonvolatile bistable device which consists of an active material on a passive or active substrate which changes its physical properties, after exposure to a sufficiently temporally short external perturbation causing an ultrafast quench. The perturbation can be from an external ultrashort laser pulse or ultrafast electrical pulse from an electrooptic device or any other generator of ultrashort pulses. This change of the materials properties can be detected as a change of optical properties or electrical resistance. The dielectric properties can be reverted back to their original state by the application of a heat pulse applied by an electrical heater within the device or an external laser.

Ultrafast quench based nonvolatile bistable device

Growing community of inventors

Ljubljana, Slovenia

Dragan Mihailovic