具有平带的电子系统单粒子谱中Mott能隙的出现
The occurrence of a Mott-like gap in single-particle spectra of electron systems possessing flat bands
摘要：
一种非常规类型的莫特绝缘体中的单粒子激发谱的间隙与准粒子之间的排斥有效相互作用被证明存在于固体的强关联电子系统，具有平带。这种差距的发生被证明是违反粒子-空穴对称性，在这样的系统中固有的后果。所得到的结果被施加到阐明费米弧结构观察到的温度高达$100\,$ K的角分辨光电子能谱的化合物Sr $_2$ IrO $_4$，不显示超导性低到低$T$。
英文摘要：
An unconventional type of the Mott's insulators where the gap in the spectrum of single-particle excitations is associated with repulsive effective interactions between quasiparticles is shown to exist in strongly correlated electron systems of solids that possess flat bands. The occurrence of this gap is demonstrated to be the consequence of violation of particle-hole symmetry, inherent in such systems. The results obtained are applied to elucidate the Fermi arc structure observed at temperatures up to $100\,$ K in angle-resolved photoemission spectra of the compound Sr$_2$IrO$_4$, not showing superconductivity down to low $T$.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
