Fourier Transformed Scanning Tunneling Peaks in the $d$-density wave phase

Abstract

In this brief note we repeat an earlier calculation of the Fourier transformed scanning tunneling spectra of the $d$-density wave (DDW) phase using a different band structure, which is more realistic and consistent with the angle resolved photoemission spectroscopy (ARPES) data. We note that four peaks, which used to be located at $(\pm π/4,0)$ and $(0, \pm π/4)$, are still present, but at positive energies their wavevectors shift to the neighborhood of $(\pm 2 π/5,0)$, $(0, \pm 2π/5)$ and slowly disperse with energy. The implications for the sensitivity with respect to the band structure are discussed.