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- Dokumenttyp:
- Zeitschriftenaufsatz
- Autor(en):
- Pollmann, F.; Fulde, P.; Runge, E.
- Titel:
- Spectral functions and optical conductivity of spinless fermions on a checkerboard lattice
- 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.
- Zeitschriftentitel:
- Physical Review B 2006-09
- Jahr:
- 2006
- Band / Volume:
- 73
- Heft / Issue:
- 12
- Volltext / DOI:
- doi:10.1103/physrevb.73.125121
- Verlag / Institution:
- American Physical Society (APS)
- E-ISSN:
- 1098-01211550-235X
- Publikationsdatum:
- 29.03.2006
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