Researchers have developed a next-generation magnetic memory material that can write information using light rather than electric current. The team expects the technology to enable data writing up to 1,000 times faster than existing magnetic memory while using less power. The material uses an optical switching phenomenon that flips electron spins with laser pulses. The group combined layered materials to achieve both optical switching and stability, and sees potential uses in AI, data centres and next-generation information processing systems.

SK Telecom has made an additional investment in AI model developer Anthropic by participating in its Series H funding round, the company said. SKT previously invested $100 million in August 2023 and initially secured about a 2 percent stake, which has since been diluted to about 0.3 percent after new share issuance. Anthropic is valued at about $965 billion, and SKT’s stake value is estimated at more than 4.4 trillion won.