scholarly journals Publisher's Note: Cluster dynamical mean field theory study of antiferromagnetic transition in the square-lattice Hubbard model: Optical conductivity and electronic structure [Phys. Rev. B94, 085110 (2016)]

2016 ◽  
Vol 94 (7) ◽  
Author(s):  
Toshihiro Sato ◽  
Hirokazu Tsunetsugu
Keyword(s):  
Field Theory ◽  
Electronic Structure ◽  
Hubbard Model ◽  
Optical Conductivity ◽  
Mean Field Theory ◽  
Mean Field ◽  
Square Lattice ◽  
Dynamical Mean Field Theory ◽  
Antiferromagnetic Transition

OPTICAL CONDUCTIVITY AND ORBITAL SUSCEPTIBILITY OF THE TWO-ORBITAL HUBBARD MODEL: EXTENDED LINEARIZED DYNAMICAL MEAN-FIELD THEORY

2009 ◽  
Vol 23 (19) ◽  
pp. 2321-2329
Author(s):  
YUN SONG
Keyword(s):  
Field Theory ◽  
Hubbard Model ◽  
Crystal Field ◽  
Optical Conductivity ◽  
Mean Field Theory ◽  
Mean Field ◽  
Crystal Field Splitting ◽  
Dynamical Mean Field Theory ◽  
Orbital Ordering ◽  
Field Splitting

We study the optical conductivity and orbital susceptibility of the two-orbital Hubbard model within the extended linearized dynamical mean-field theory. In the orbital-selective Mott phase (OSMP), the optical conductivity of the wide band presents a non-zero Drude peak, while the optical conductivity of the narrow band drops to zero in the lower energy region. It is shown that the OSMP is constrained by the negative crystal-field splitting, while it can survive in the region with positive crystal-field splitting. We also find that the orbital susceptibility presents a reversion at Fermi surface in the OSMP regime, which implies that orbital ordering can coexist with OSMP in two-orbital systems.

scholarly journals Electronic structure calculations with dynamical mean-field theory

2006 ◽  
Vol 78 (3) ◽  
pp. 865-951 ◽  
Author(s):  
G. Kotliar ◽  
S. Y. Savrasov ◽  
K. Haule ◽  
V. S. Oudovenko ◽  
O. Parcollet ◽  
...  
Keyword(s):  
Field Theory ◽  
Electronic Structure ◽  
Mean Field Theory ◽  
Mean Field ◽  
Electronic Structure Calculations ◽  
Dynamical Mean Field Theory ◽  
Structure Calculations
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