Rowlands D A, Zhang Yu-Zhong
Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China.
J Phys Condens Matter. 2014 Jul 9;26(27):274201. doi: 10.1088/0953-8984/26/27/274201. Epub 2014 Jun 17.
Using the nonlocal coherent-potential approximation we study the effect of intersite spatial correlations on the transition from band insulator to metal as well as from metal to Mott insulator in the 'alloy analogy' approach to the paramagnetic solution of the half-filled ionic Hubbard model. We find that intersite spatial correlations enhance the metallic phase.
我们使用非局域相干势近似，在半填充离子哈伯德模型顺磁解的“合金类比”方法中，研究格点间空间关联对从带绝缘体到金属以及从金属到莫特绝缘体转变的影响。我们发现格点间空间关联增强了金属相。
