Quantum Discovery Promises Efficient Electronics

2025-04-18 semicon

Eindhoven, Friday, 18 April 2025.
Researchers have generated spin currents 10 times stronger at room temperature, hinting at low-power, high-performance electronics, notably in AI and Magnetoresistive Random Access Memory (MRAM).

Breakthrough at KAIST

A groundbreaking discovery by researchers at the Korea Advanced Institute of Science and Technology (KAIST) and Sogang University has demonstrated quantum magnetisation dynamics that generate spin currents ten times stronger than conventional methods [1]. The team, led by researcher Kyung-Jin Lee, achieved this remarkable feat at room temperature, overcoming previous limitations that required extremely low temperatures [1][4]. The research utilized a novel method called ‘longitudinal spin pumping’ to generate these enhanced currents [4].

Implications for Memory Technology

The advancement holds particular promise for Magnetoresistive Random Access Memory (MRAM), a critical component in various applications from software to aerospace technology [1]. According to quantum technology research specialist Aamir Ali from Chalmers University, this enhancement in spin current generation is ‘very promising and exciting’ [4]. The improved spin Hall conductivity could reduce power consumption by more than two orders of magnitude compared to existing systems [3].

Future Applications and Industry Impact

Major semiconductor manufacturers, including Samsung, are actively exploring MRAM as a potential next-generation memory solution for AI computing [1]. The research team conducted their experiments using iron rhodium material, employing advanced ultrafast measurement techniques to detect spin pumping currents on a nanosecond timescale [4]. The technology enables efficient and field-free spin-orbit torque switching of perpendicular magnetization with a remarkably low current density of 1.4 MA/cm² [3].

Broader Implications

This development could revolutionize various sectors beyond computing, including biomedical applications and drug design [6]. The technology’s potential extends to enhanced molecular diagnostics and non-invasive medical imaging techniques, promising improved treatment efficacy and reduced side effects in medical applications [6]. The research team plans to explore new materials and mechanisms to further enhance spin current generation, continuing their push toward more efficient electronic devices [4].

Bronnen

electronics quantum mechanics