This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.81.235133 in citations.
Please use the identifier: http://hdl.handle.net/2128/10961 in citations.
Spectral weight of doping-induced states in the two-dimensional Hubbard model
Spectral weight of doping-induced states in the two-dimensional Hubbard model
The spectral weight of states induced in the Mott gap via hole doping in the two-dimensional Hubbard model is studied within cluster dynamical mean-field theory combined with finite-temperature exact diagonalization. If the cutoff energy is chosen to lie just below the upper Hubbard band, the integr...
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Personal Name(s): | Liebsch, A. |
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Contributing Institute: |
Quanten-Theorie der Materialien; IFF-1 |
Published in: | Physical Review B Physical review / B, 81 81 (2010 2010) 23 23, S. 235133 235133 |
Imprint: |
College Park, Md.
APS
2010
|
Physical Description: |
235133 |
DOI: |
10.1103/PhysRevB.81.235133 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Physical Review B
81 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/10961 in citations.
The spectral weight of states induced in the Mott gap via hole doping in the two-dimensional Hubbard model is studied within cluster dynamical mean-field theory combined with finite-temperature exact diagonalization. If the cutoff energy is chosen to lie just below the upper Hubbard band, the integrated weight per spin is shown to satisfy W+(delta) >= delta (delta denotes the total number of holes), in agreement with model predictions by Eskes et al. [Phys. Rev. Lett. 67, 1035 (1991)]. However, if the cutoff energy is chosen to lie in the range of the pseudogap, W+(delta) remains much smaller than delta and approximately saturates near delta approximate to 0.2, ..., 0.3. The analysis of recent x-ray absorption spectroscopy data therefore depends crucially on the appropriate definition of the integration window. |