Kf. Braun et al., Observation of charge-density wave domains on the Cr(110) surface by low-temperature scanning tunneling microscopy, PHYS REV L, 85(16), 2000, pp. 3500-3503
We have studied the Cr(110) surface with low-temperature scanning tunneling
microscopy at 6 to 145 K. For tunneling voltages below +/- 150 mV we obser
ve a surface charge-density wave (CDW) with a wavelength of 42 Angstrom and
wave fronts aligned with the [001] in-plane direction. The observed wave p
attern is identified as the surface projection of the bulk CDW's arising fr
om the spin-density wave ground state of Cr with the Q vector parallel to [
100] and [010], respectively. The bulk CDW with Q parallel to the [001] in-
plane direction appears, however, to be strongly suppressed at the Cr(110)
surface.