Patent ID: 11923006
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. A selective non-volatile memory device comprising:
a first electrode;
a second electrode;
at least one layer made of an active material, forming an active memory layer, disposed between the first and the second electrode;, said selective non-volatile memory device having at least two programmable memory states:
a first programmable non-volatile memory state associated with a first threshold voltage Vth1 for the active memory layer, said selective non-volatile memory device having in said first memory state a characteristic voltage current such that said selective non-volatile memory device switches from a highly resistive state to a state that is less resistive than the highly resistive state as soon as a voltage greater than or equal to Vth1 is applied between the first and second electrodes and returns to its highly resistive state when the voltage applied is strictly less than Vth1, an intensity of the current passing through said selective non-volatile memory device in its highly resistive state being strictly less than 10−7 A;
a second non-volatile memory state associated with a second threshold voltage Vth2 strictly greater than the first threshold voltage Vth1, said selective non-volatile memory device having in said second memory state a characteristic voltage current such that said selective non-volatile memory device switches from a highly resistive state to a state that is less resistive than the highly resistive state as soon as a voltage greater than or equal to Vth2 is applied between the first and second electrodes and returns to its highly resistive state when the voltage applied is strictly less than Vth2, the intensity of the current passing through said selective non-volatile memory device in its highly resistive state being strictly less than 10−7 A;, the material of the active memory layer being made of a mixture of an As2Te3 alloy and of a Ge3Se7 alloy.