Journal Article

PreJuSER-12050

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spectral weight of doping-induced states in the two-dimensional Hubbard model

Liebsch, A.FZJ*

2010
APS College Park, Md.

This record in other databases:  

Please use a persistent id in citations: http://hdl.handle.net/2128/10961  doi:10.1103/PhysRevB.81.235133

Abstract: 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.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

---

Contributing Institute(s):

1. Quanten-Theorie der Materialien (IFF-1)

Research Program(s):

1. Kondensierte Materie (P54)

Appears in the scientific report 2010

---

Database coverage:
;

---