Photoinduced absorptions inside the Mott gap in the two-dimensional extended Hubbard model
نویسندگان
چکیده
منابع مشابه
Mott transition in the two-dimensional Hubbard model.
Spectral properties of the two-dimensional Hubbard model near the Mott transition are investigated by using cluster perturbation theory. The Mott transition is characterized by freezing of the charge degrees of freedom in a single-particle excitation that leads continuously to the magnetic excitation of the Mott insulator. Various anomalous spectral features observed in cuprate high-temperature...
متن کاملThe Mott-Hubbard transition and the paramagnetic insulating state in the two-dimensional Hubbard model
– The Mott-Hubbard transition is studied in the context of the two-dimensional Hubbard model. Analytical calculations show the existence of a critical value Uc of the potential strength which separates a paramagnetic metallic phase from a paramagnetic insulating phase. Calculations of the density of states and double occupancy show that the ground state in the insulating phase contains always a...
متن کاملDimensional-crossover-driven Mott transition in the frustrated Hubbard model.
We study the Mott transition in a frustrated Hubbard model with next-nearest neighbor hopping at half-filling. The interplay between interaction, dimensionality, and geometric frustration closes the one-dimensional Mott gap and gives rise to a metallic phase with Fermi surface pockets. We argue that they emerge as a consequence of remnant one-dimensional umklapp scattering at the momenta with v...
متن کاملSignatures of the Mott transition in the antiferromagnetic state of the two-dimensional Hubbard model
L. Fratino, P. Sémon, 3 M. Charlebois, G. Sordi, and A.-M. S. Tremblay 4 Department of Physics, Royal Holloway, University of London, Egham, Surrey, UK, TW20 0EX Département de physique and Regroupement québéquois sur les matériaux de pointe, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1 Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973-5000, USA C...
متن کاملFinite doping signatures of the Mott transition in the two-dimensional Hubbard model.
Experiments on layered materials call for a study of the influence of short-range spin correlations on the Mott transition. To this end, we solve the cellular dynamical mean-field equations for the Hubbard model on a plaquette with continuous-time quantum Monte Carlo calculations. The normal-state phase diagram as a function of temperature T, interaction strength U, and filling n reveals that u...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2017
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.96.195141