论文标题
蜂窝状晶格靠近莫特州立的蜂窝状晶格中的抗铁磁性和手性-D波超导性
Antiferromagnetism and chiral-d wave superconductivity in a honeycomb lattice close to Mott state
论文作者
论文摘要
用T-J模型和奴隶玻色子平均场理论研究了蜂窝状（AFM）和手性 - D波超导性（SC），靠近抗铁磁（AF）Mott State的蜂窝状晶格（AF）Mott State填充。研究了不同带填充部分处的顺序参数和单个粒子分散关系。发现AFM增强了SC，并导致两个带填充分数的淋巴结单粒子分散关系。讨论了这些意外的淋巴结分散关系，从无节性手性 - D波超导顺序中进行了讨论。还给出了AF手性D波状态和AF扩展S波状态之间的比较，以突出手性 - D波超导状态的相关特征。这项研究可能与蜂窝晶格材料有关，例如$ _3 $ cu $ _2 $ vo $ _9 $化合物。
The antiferromagnetism (AFM) and chiral-d wave superconductivity (SC) in a honeycomb lattice close to an antiferromagnetic (AF) Mott state at half band filling are studied with a t-J model and slave boson mean field theory. The order parameters and single particle dispersion relations at different band filling fractions are investigated. It is found that the AFM enhances the SC, and leads to nodal single particle dispersion relations at two band filling fractions. These unexpected nodal dispersion relations out of nodeless chiral-d wave superconducting order are discussed. A comparison between AF chiral-d wave states and AF extended-s wave states is also given to highlight the pertinent features in chiral-d wave superconducting states. This study may be related to the honeycomb lattice materials such as the In$_3$Cu$_2$VO$_9$ compound.
