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Physical Review Letters -- October 16, 2000 -- Volume 85, Issue 16 pp. 3500-3503

Observation of Charge-Density Wave Domains on the Cr(110) Surface by Low-Temperature Scanning Tunneling Microscopy

K.-F. Braun, S. Fölsch, G. Meyer, and K.-H. Rieder

Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany

(Received 11 April 2000)

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 observe a surface charge-density wave (CDW) with a wavelength of 42  Å and wave fronts aligned with the [001] in-plane direction. The observed wave pattern is identified as the surface projection of the bulk CDW's arising from 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. ©2000 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v85/p3500
DOI: 10.1103/PhysRevLett.85.3500
PACS: 75.30.Pd, 61.16.Ch, 75.30.Fv        Additional Information

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