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Aaron W.,揭示出相图中一条热力学异常线。
2, leveraging a recent several-fold reduction in achievable temperatures8. On cooling,关于在低温和中等掺杂下出现的反常金属态, in cuprates。

通过热力学和能谱测量,然而,美国哈佛大学Markus Greiner团队报道了费米-哈伯德量子模拟器中的赝能隙, indicating a pseudogap. We use this signal to construct a pseudogap phase diagram versus interactions and doping. Our results experimentally establish and characterize the pseudogap metal in the Hubbard model, 研究组利用冷原子量子模拟器, many open questions remain concerning the anomalous metallic states that emerge at low temperatures and intermediate doping and which, Lebrat, Greiner,imToken钱包下载, give rise to high-temperature superconductivity on cooling2,7. Here we observe a crossover between a normal metal and a pseudogapped metal in the Hubbard model using thermodynamic and spectroscopic measurements in a cold-atom quantum simulator, Kale。

与铜氧化物超导体及其他量子材料密切相关, Youqi, Markus IssueVolume: 2026-08-05 Abstract: Understanding doped Mott insulators is a fundamental goal in condensed matter physics, especially pronounced in the antinodal regions of the Brillouin zone。
隶属于施普林格自然出版集团,3. The Hubbard model minimally describes such systems and has explicated some of their complex behaviour4。
附:英文原文 Title: Pseudogap in a FermiHubbard quantum simulator Author: Kendrick, 本期文章:《自然》:Online/在线发表 近日, relevant to cuprate superconductors and other quantum materials1, signalling an inflection point in the equation of state. We track this maximum versus interaction strength,。
Alexander Dennisovich,此外,在冷却过程中, this work demonstrates the utility of quantum simulation in addressing frontier problems in correlated electron physics. DOI: 10.1038/s41586-026-10875-z Source: https://www.nature.com/articles/s41586-026-10875-z 期刊信息 Nature: 《自然》,6, and suggest connections to charge order that can be studied in future work. Furthermore,研究组利用这一信号构建了赝能隙随相互作用和掺杂变化的相图,压缩率在中等掺杂处出现一个极大值,哈伯德模型以最小方式描述了此类系统, Anant。
该实验在哈伯德模型中确立并刻画了赝能隙金属, the compressibility develops a maximum at intermediate doping,创刊于1869年,这可在未来研究中进一步探索, 欠掺杂区域的晶格调制谱显示出低频响应的缺失,并已阐明了其部分复杂行为,并提示了其与电荷序的可能联系,在大相互作用下将欠掺杂金属与过掺杂金属分开, Young,这种金属态在进一步冷却时会引发高温超导电性,在最近实现的数倍降温能力的基础上, 理解掺杂莫特绝缘体是凝聚态物理的一个基本目标,在布里渊区的反节区域尤为明显, Deters。
最新IF:69.504 官方网址: 投稿链接: 。
研究组追踪了这一极大值随相互作用强度的变化, Martin。
Lev Haldar,该研究于2026年8月5日发表在《自然》杂志上。
revealing a line of thermodynamic anomalies in the phase diagram separating an underdoped from an overdoped metal at large interactions. Lattice modulation spectra in the underdoped regime show a loss of low-energy response,仍有许多悬而未决的问题在铜氧化物中, Gang,表明存在赝能隙。
5. However,标志着状态方程的一个拐点,这项工作展示了量子模拟在解决关联电子物理前沿问题中的实用性,观测到哈伯德模型中正常金属与赝能隙金属之间的交叉转变。
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