EXCITONIC MECHANISM FOR SUPERCONDUCTIVITY IN DOPED MOTT INSULATOR

1992 ◽  
Vol 06 (07) ◽  
pp. 383-390 ◽  
Author(s):  
MICHEL CYROT
Keyword(s):  
Strong Interaction ◽  
Mott Insulator ◽  
Bound State ◽  
Empty Site ◽  
Small Energy ◽  
Hartree Fock ◽  
Doped Mott Insulator ◽  
The Creation ◽  
Excitonic Mechanism

We argue that when a Mott insulator is doped, it exists a range of concentration where two kinds of excitations coexist. Besides those of the usual Hartree-Fock metal, metallic excitons of very small energy persist. These excitons stems from the creation of an empty site surrounded by a virtual bound state in the band. Due to the strong interaction between electrons and metallic excitons, excitonic superconductivity is favoured.

scholarly journals Two-component electronic phase separation in the doped Mott insulator Y1−xCaxTiO3

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
S. Hameed ◽  
J. Joe ◽  
D. M. Gautreau ◽  
J. W. Freeland ◽  
T. Birol ◽  
...  
Keyword(s):  
Phase Separation ◽  
Mott Insulator ◽  
Electronic Phase Separation ◽  
Electronic Phase ◽  
Two Component ◽  
Doped Mott Insulator

scholarly journals Time-reversal symmetry breaking superconducting ground state in the doped Mott insulator on the honeycomb lattice

2013 ◽  
Vol 88 (15) ◽  
Author(s):  
Zheng-Cheng Gu ◽  
Hong-Chen Jiang ◽  
D. N. Sheng ◽  
Hong Yao ◽  
Leon Balents ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Ground State ◽  
Time Reversal ◽  
Mott Insulator ◽  
Honeycomb Lattice ◽  
Time Reversal Symmetry ◽  
Doped Mott Insulator

BOOTSTRAPPING A HEAVY HIGGS

1988 ◽  
Vol 03 (03) ◽  
pp. 295-301 ◽  
Author(s):  
A.P. CONTOGOURIS ◽  
N. MEBARKI ◽  
D. ATWOOD ◽  
H. TANAKA
Keyword(s):  
Simple Model ◽  
Strong Interaction ◽  
Higgs Mass ◽  
Bound State ◽  
Interaction Effects ◽  
Phase Shifts ◽  
Dispersion Relations ◽  
S Wave ◽  
Self Consistent ◽  
Consistent Solution

Possible strong interaction effects arising when the Higgs mass MH is sufficiently large are investigated in the system of interacting Higgs, using dispersion relations (N/D method). A simple model indicates that for MH≳1 TeV several such effects are present: an 1=0 bound state, large s-wave phase shifts and a resonance-like state. In the range 1.5≲MH≲3.5 TeV the above bound state amounts to an approximate bootstrap (self-consistent) solution for the Higgs with respect to both its mass and coupling. Other aspects of the H-H strong interaction system are also investigated.

scholarly journals The analytical description of a doped Mott insulator

2019 ◽  
Vol 33 (29) ◽  
pp. 1950355
Author(s):  
Yu-Liang Liu
Keyword(s):  
Green’S Function ◽  
Coulomb Interaction ◽  
Green's Function ◽  
Doping Concentration ◽  
Cuprate Superconductors ◽  
Mott Insulator ◽  
Spin Fluctuations ◽  
Hole Doping ◽  
Charge Fluctuation ◽  
Doped Mott Insulator

With the hierarchical Green’s function approach, we study a doped Mott insulator described with the Hubbard model by analytically solving the equations of motion of an one-particle Green’s function and related multiple-point correlation functions, and find that the separation of the spin and charge degrees of freedom of the electrons is an intrinsic character of the doped Mott insulator. For enough of large on-site repulsive Coulomb interaction, we show that the spectral weight of the one-particle Green’s function is proportional to the hole doping concentration that is mainly produced by the charge fluctuation of electrons, while the excitation spectrum of the electrons is composed of two parts: One is contributed by the spin fluctuation of the electrons, which is proportional to the hole doping concentration, and another one is coming from the coupling between the charge and spin fluctuations of the electrons that takes the maximum at undoping. All of these low energy/temperature physical properties originate from the strong on-site Coulomb interaction. The present results are consistent with the spectroscopy observations of the cuprate superconductors and the numerical calculations in normal state above the pseudogap regime.

The bound state stability of the hydride ion in Hartree-Fock theory

2020 ◽  
pp. 167-189 ◽  
Author(s):  
Hazel Cox ◽  
Adam L. Baskerville ◽  
Ville J.J. Syrjanen ◽  
Michael Melgaard
Keyword(s):  
Bound State ◽  
Hartree Fock ◽  
Hydride Ion

scholarly journals Non-Fermi-liquid regime of a doped Mott insulator

1999 ◽  
Vol 59 (8) ◽  
pp. 5341-5360 ◽  
Author(s):  
Olivier Parcollet ◽  
Antoine Georges
Keyword(s):  
Fermi Liquid ◽  
Mott Insulator ◽  
Doped Mott Insulator

Quantum Correlated Plasmons and Their Tunability in Undoped and Doped Mott-Insulator Cuprates

ACS Photonics ◽  
2019 ◽  
Vol 6 (12) ◽  
pp. 3281-3289 ◽  
Author(s):  
Xinmao Yin ◽  
Chi Sin Tang ◽  
Shengwei Zeng ◽  
Teguh Citra Asmara ◽  
Ping Yang ◽  
...  
Keyword(s):  
Mott Insulator ◽  
Doped Mott Insulator

scholarly journals Revisiting the hot matter in the center of gamma-ray bursts and supernovae

2013 ◽  
Vol 555 ◽  
pp. A129 ◽  
Author(s):  
Ang Li ◽  
Tong Liu
Keyword(s):  
Strong Interaction ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Model Calculations ◽  
Hartree Fock ◽  
Equation Of States ◽  
Chemical Potentials ◽  
Hot Matter ◽  
Inner Region ◽  
Proto Neutron Star

Aims. Hot matter with nucleons can be produced in the inner region of the neutrino-dominated accretion flow in gamma-ray bursts or during the proto-neutron star birth in successful supernovae. The composition and equation of state of the matter depend on the dynamic β equilibrium under various neutrino opacities. The strong interaction between nucleons may also play an important role. We plan to extend the previous studies by incorporating these two aspects in our model. Methods. The modification of the β-equilibrium condition from neutrino optically thin to thick was modeled by an equilibrium factor χ ranging between the neutrino-freely-escaping case and the neutrino-trapped case. We employed the microscopic Brueckner-Hartree-Fock approach extended to the finite temperature regime to study the interacting nucleons. Results. We show the composition and chemical potentials of the hot nuclear matter for different densities and temperatures at each stage of β equilibrium. We also compare our realistic equation of states with those of the free-gas model. We find that it is important to properly describe the neutrino opacity and the strong interaction between nucleons, and they should be taken into account in model calculations.

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