相互作用在导电聚合物中产生有效的平带
Interaction created effective flat bands in conducting polymers
摘要：
对于一般类的导电聚合物与任意大的单位细胞和不同的现场库仑排斥值在不同类型的网站，我证明了在确切的条件下出现的可能性的上部，相互作用产生的“有效”的平带。这最后出现作为伴随着强相互作用能量降低的动能淬火的结果，并导致非饱和铁磁状态。这种有序状态明显不同于已知的平带铁磁性。这是因为它出现在一个系统中没有裸露的平带，需要不均匀的现场库仑排斥值，并拥有非零的相互作用下限出现的有序相。
英文摘要：
For a general class of conducting polymers with arbitrary large unit cell and different on-site Coulomb repulsion values on different type of sites, I demonstrate in exact terms the emergence possibility of an upper, interaction created "effective" flat band. This last appears as a consequence of a kinetic energy quench accompanied by a strong interaction energy decrease, and leads to a non-saturated ferromagnetic state. This ordered state clearly differs from the known flat-band ferromagnetism. This is because it emerges in a system without bare flat bands, requires inhomogeneous on-site Coulomb repulsions values, and possesses non-zero lower interaction limits at the emergence of the ordered phase.
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