scholarly journals Breakdown of the Mott insulator: Exact solution of an asymmetric Hubbard model

1998 ◽  
Vol 58 (24) ◽  
pp. 16051-16056 ◽  
Author(s):  
Takahiro Fukui ◽  
Norio Kawakami
Keyword(s):  
Exact Solution ◽  
Hubbard Model ◽  
Mott Insulator ◽  
Asymmetric Hubbard Model

scholarly journals Exact solution of the Bose-Hubbard model on the Bethe lattice

2009 ◽  
Vol 80 (1) ◽  
Author(s):  
Guilhem Semerjian ◽  
Marco Tarzia ◽  
Francesco Zamponi
Keyword(s):  
Exact Solution ◽  
Hubbard Model ◽  
Bethe Lattice

Exact solution of the Hubbard model with boundary hoppings and fields

2005 ◽  
Vol 70 (2) ◽  
pp. 218-224 ◽  
Author(s):  
I. N Karnaukhov ◽  
B. V Egorov
Keyword(s):  
Exact Solution ◽  
Hubbard Model

scholarly journals Effective spin couplings in the Mott insulator of the honeycomb lattice Hubbard model

2012 ◽  
Vol 14 (11) ◽  
pp. 115027 ◽  
Author(s):  
Hong-Yu Yang ◽  
A Fabricio Albuquerque ◽  
Sylvain Capponi ◽  
Andreas M Läuchli ◽  
Kai Phillip Schmidt
Keyword(s):  
Hubbard Model ◽  
Mott Insulator ◽  
Honeycomb Lattice ◽  
Effective Spin

scholarly journals Emergence of quasiparticles in a doped Mott insulator

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Yao Wang ◽  
Yu He ◽  
Krzysztof Wohlfeld ◽  
Makoto Hashimoto ◽  
Edwin W. Huang ◽  
...  
Keyword(s):  
Hubbard Model ◽  
Single Layer ◽  
Mott Insulator ◽  
Spectral Weight ◽  
Particle Spectrum ◽  
Electron Hole ◽  
Strong Electron ◽  
Side Band ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Weakly Coupled

AbstractHow a Mott insulator develops into a weakly coupled metal upon doping is a central question to understanding various emergent correlated phenomena. To analyze this evolution and its connection to the high-Tc cuprates, we study the single-particle spectrum for the doped Hubbard model using cluster perturbation theory on superclusters. Starting from extremely low doping, we identify a heavily renormalized quasiparticle dispersion that immediately develops across the Fermi level, and a weakening polaronic side band at higher binding energy. The quasiparticle spectral weight roughly grows at twice the rate of doping in the low doping regime, but this rate is halved at optimal doping. In the heavily doped regime, we find both strong electron-hole asymmetry and a persistent presence of Mott spectral features. Finally, we discuss the applicability of the single-band Hubbard model to describe the evolution of nodal spectra measured by angle-resolved photoemission spectroscopy (ARPES) on the single-layer cuprate La2−xSrxCuO4 (0 ≤ x ≤ 0.15). This work benchmarks the predictive power of the Hubbard model for electronic properties of high-Tc cuprates.

scholarly journals Observation of a Superradiant Mott Insulator in the Dicke-Hubbard Model

2015 ◽  
Vol 115 (23) ◽  
Author(s):  
J. Klinder ◽  
H. Keßler ◽  
M. Reza Bakhtiari ◽  
M. Thorwart ◽  
A. Hemmerich
Keyword(s):  
Hubbard Model ◽  
Mott Insulator
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