2018/08/31 by Xing-Jie Han, Chuang Chen, Jing Chen +9 · 10 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Charge (physics) #Condensed matter physics #Cuprate #Electron #Hubbard model #Insulator (electricity) #Mott insulator #Mott transition #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum and electron transport phenomena #Quantum mechanics #Strongly correlated material #Superconductivity #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.99.245150
published in Physical review. B./Physical review. B 99(24) (American Physical Society) · 12 pages, 10 figures
openalex publication_date 2019/06/26 · arxiv created 2019/06/28 · arxiv updated 2019/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The Mott insulator is the quintessential strongly correlated electronic state. We obtain complete insight into the physics of the two-dimensional Mott insulator by extending the slave-fermion (holon-doublon) description to finite temperatures. We first benchmark its predictions against state-of-the-art quantum Monte Carlo simulations, demonstrating quantitative agreement. Qualitatively, the short-ranged spin fluctuations both induce holon-doublon bound states and renormalize the charge sector to form the Hubbard bands. The Mott gap is understood as the charge gap renormalized downward by these spin fluctuations. As temperature increases, the Mott gap closes before the charge gap, causing a pseudogap regime to appear naturally during the melting of the Mott insulator.