实验揭示赝能隙态潜藏磁性有序结构 为理解高温超导起源提供关键线索

Core Insights - Physicists at the Max Planck Institute for Quantum Optics have experimentally revealed magnetic ordered structures hidden in pseudogap states, providing crucial insights into the origins of high-temperature superconductivity [1] Group 1: Research Findings - The study indicates that superconductivity is not directly derived from conventional metallic states but first enters a peculiar intermediate state known as the pseudogap state, where electron behavior is abnormal and available energy states are reduced [1] - The research team utilized a cold atom quantum simulator to construct the Fermi-Hubbard model with lithium atoms, simulating electron interactions in a highly controlled environment [2] Group 2: Experimental Techniques - Using a quantum gas microscope, the team captured over 35,000 high-resolution images of atoms and spin states under varying temperatures and doping conditions [2] - Analysis revealed that while long-range antiferromagnetic order disappears with doping, stable short-range magnetic correlations persist at extremely low temperatures [2] Group 3: Implications for Future Research - The findings suggest that the magnetic correlations at different doping levels and temperatures can be unified into a single curve, closely aligning with the characteristic temperature of the pseudogap, indicating a strong relationship between the pseudogap and the weakened but still present magnetic structure [2] - The research also discovered that in the pseudogap state, electrons form complex multiparticle structures, with measurements showing the involvement of five particles in correlation effects, suggesting that even a single dopant can disturb the surrounding magnetic arrangement over a larger spatial range [2] - The cold atom quantum simulation provides a controllable platform for exploring complex quantum materials, with the potential for discovering new quantum ordered states as experimental temperatures decrease and observational techniques improve [2]