Coexistence of superconductivity with partially filled stripes in the Hubbard model

• 成果类型: Article
• 署名作者: Xu, Hao; Chung, Chia-Min; Qin, Mingpu; Schollwoeck, Ulrich; White, Steven R.; Zhang, Shiwei
• 署名单位: William & Mary; National Sun Yat Sen University; National Sun Yat Sen University; Shanghai Jiao Tong University; Hefei National Laboratory; University of Munich; University of California System; University of California Irvine; Simons Foundation; Flatiron Institute
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-13657
• DOI: 10.1126/science.adh7691
• 发表日期: 2024-05-10
• 关键词: high-tc superconductivity

摘要

The Hubbard model is an iconic model in quantum many-body physics and has been intensely studied, especially since the discovery of high-temperature cuprate superconductors. Combining the complementary capabilities of two computational methods, we found superconductivity in both the electron- and hole-doped regimes of the two-dimensional Hubbard model with next-nearest-neighbor hopping. In the electron-doped regime, superconductivity was weaker and was accompanied by antiferromagnetic N & eacute;el correlations at low doping. The strong superconductivity on the hole-doped side coexisted with stripe order, which persisted into the overdoped region with weaker hole-density modulation. These stripe orders varied in fillings between 0.6 and 0.8. Our results suggest the applicability of the Hubbard model with next-nearest hopping for describing cuprate high-transition temperature (T-c) superconductivity.