Non-volatile Clocked Spin Wave Interconnect for Beyond-CMOS Nanomagnet Pipelines

Area of Science:

• * Condensed Matter Physics
• * Spintronics
• * Materials Science

Background:

• * Spin waves offer potential for low-power information transmission and processing.
• * Previous spin wave logic circuits explored magneto-electric effects for amplification and switching.
• * Challenges remain in creating efficient, non-volatile spin wave devices.

Purpose of the Study:

• * To propose a comprehensive scheme for a clocked non-volatile spin wave device.
• * To introduce key components: charge-to-spin converter and magneto-electric spin wave repeaters.
• * To ensure the device meets essential logic application requirements.

Main Methods:

• * Integration of a charge-to-spin converter for electrical-to-spin domain translation.
• * Utilization of magneto-electric spin wave repeaters operating in transmitter, memory, and detector regimes.
• * Implementation of a novel clocking scheme for sequential transmission and non-reciprocity.

Main Results:

• * The proposed device design facilitates clocked, non-volatile operation.
• * The device incorporates spin wave repeaters functioning as transmitters, non-volatile memory, and detectors.
• * A novel clocking scheme ensures unidirectional information flow.

Conclusions:

• * The developed spin wave device scheme satisfies key logic requirements: nonlinearity, amplification, concatenability, feedback prevention, and complete Boolean operations.
• * This research advances the development of efficient, low-power spintronic logic devices.
• * The proposed architecture provides a pathway for next-generation computing hardware.