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- Title:
Spectral functions and optical conductivity of spinless fermions on a checkerboard lattice
- Document type:
- Zeitschriftenaufsatz
- Author(s):
- Pollmann, F.; Fulde, P.; Runge, E.
- Abstract:
- We study the dynamical properties of spinless fermions on the checkerboard lattice. Our main interest is the limit of large nearest-neighbor repulsion V as compared with hopping ∣t∣. The spectral functions show broad low-energy excitations which are due to the dynamics of fractionally charged excitations. Furthermore, it is shown that the fractional charges contribute to the electrical current density.
- Journal title:
- Physical Review B 2006-09
- Year:
- 2006
- Journal volume:
- 73
- Journal issue:
- 12
- Fulltext / DOI:
- doi:10.1103/physrevb.73.125121
- Publisher:
- American Physical Society (APS)
- E-ISSN:
- 1098-01211550-235X
- Date of publication:
- 29.03.2006
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