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Okayama University has identified K₂Cr₃As₃ as a promising bulk spin-triplet superconductor with a 6.2K transition temperature that lacks long-range magnetic order. This material provides a controlled platform for investigating topological superconductivity and Majorana excitations, which are essential components for fault-tolerant quantum computing architectures. The ability to switch between three distinct quantum phases using external fields marks a significant step toward practical topological qubit development.

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Okayama University’s quantum superconductor boasts 6.2K transition

Quantum ZeitgeistSeptember 10, 20264 min read

Okayama University researchers detail K₂Cr₃As₃, a novel superconductor exhibiting three spin-triplet phases and a 6.2K transition.

Okayama University researchers have identified three distinct superconducting phases within the material K₂Cr₃As₃, a chromium-based compound exhibiting superconductivity at a relatively high 6.2 K and lacking long-range magnetic order. These phases offer a path for exploring topological superconductivity and the potential Majorana excitations vital to advanced quantum computing. Professor Guo-qing Zheng explained the team’s aim was “to find a real bulk spin-triplet superconductor with high Tc,” and K₂Cr₃As₃ delivers this…

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