<p>➀ MIT researchers developed a magnetic transistor using chromium sulfur bromide, a 2D magnetic semiconductor, to replace silicon, enabling smaller, faster, and more energy-efficient circuits;</p><p>➁ The material's clean magnetic state switching and air stability overcome silicon's limitations, achieving a 10x current amplification with low-energy operation;</p><p>➂ The transistor's built-in memory potential simplifies circuit design and unlocks new applications in high-performance electronics.</p>