We study the ground state properties of a geometrically frustrated Hubbard model on the checkerboard lattice by means of the path-integral renormalization group method. We calculate the charge and spin correlation functions to investigate instabilities to the charge and/or spin-ordered states. In contrast to the recent claim based on a renormalized mean-field treatment, charge correlations are uniformly suppressed while spin correlations are enhanced at certain wave vectors.
- Checkerboard lattice
- Geometrical frustration
- Hubbard model
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering