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Paired electron crystal: Order from frustration in the quarter-filled band

Paired electron crystal: Order from frustration in the quarter-filled band

We present a study of the effects of simultaneous charge and spin frustration on the two-dimensional strongly correlated quarter-filled band on an anisotropic triangular lattice. Our conclusions are based on exact diagonalization studies that include electron-electron interactions as well as adiabatic electron-phonon coupling terms treated self-consistently. The broken-symmetry states that …