Costi T A, Liebsch A
Institut für Festkörperforschung, Forschungszentrum Jülich, 52425 Jülich, Germany.
Phys Rev Lett. 2007 Dec 7;99(23):236404. doi: 10.1103/PhysRevLett.99.236404.
The interaction between itinerant and Mott localized electronic states in strongly correlated materials is studied within dynamical mean field theory in combination with the numerical renormalization group method. A novel nonmagnetic zero temperature quantum phase transition is found in the bad-metallic orbital-selective Mott phase of the two-band Hubbard model, for values of the Hund's exchange which are relevant to typical transition metal oxides.
在动态平均场理论结合数值重整化群方法的框架下，研究了强关联材料中巡游电子态与莫特局域电子态之间的相互作用。对于与典型过渡金属氧化物相关的洪德交换值，在两带哈伯德模型的不良金属轨道选择性莫特相中发现了一种新型的非磁性零温量子相变。
