Rincón Julián, Moreo Adriana, Alvarez Gonzalo, Dagotto Elbio
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA and Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA and Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996, USA.
Phys Rev Lett. 2014 Mar 14;112(10):106405. doi: 10.1103/PhysRevLett.112.106405. Epub 2014 Mar 11.
The orbital-selective Mott phase of multiorbital Hubbard models has been extensively analyzed before using static and dynamical mean-field approximations. In parallel, the properties of block states (antiferromagnetically coupled ferromagnetic spin clusters) in Fe-based superconductors have also been much discussed. The present effort uses numerically exact techniques in one-dimensional systems to report the observation of block states within the orbital-selective Mott phase regime, connecting two seemingly independent areas of research, and providing analogies with the physics of double-exchange models.
多轨道哈伯德模型的轨道选择性莫特相之前已使用静态和动态平均场近似进行了广泛分析。与此同时，铁基超导体中块态（反铁磁耦合铁磁自旋簇）的性质也备受讨论。本研究利用一维系统中的数值精确技术，报告了在轨道选择性莫特相区域内对块态的观测结果，将两个看似独立的研究领域联系起来，并提供了与双交换模型物理的类比。
