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 $(\pm \pi /4,0)$ and $(0,\pm \pi /4)$, are still present, but at positive energies their wavevectors shift to the neighborhood of $(\pm 2\pi /5,0)$, $(0,\pm 2\pi /5)$ and slowly disperse with energy. The implications for the sensitivity with respect to the band structure are discussed.

3 pages, 3 figures, RevTex4