Researchers at Yale University have developed a magnetic quantum material that allows electrical current to flow in only one direction, according to a study published in a peer-reviewed journal. The discovery provides a blueprint for using Fermi’s Golden Rule, a fundamental principle of quantum mechanics, in solid-state systems, officials said.
According to the research team, the material could lead to more efficient electronic devices by reducing energy loss caused by backscattering, where electrons travel backward and waste power. The work addresses a long-standing challenge in condensed-matter physics: controlling the direction of electron flow without applying external magnetic fields.
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