Oscillatory interaction of steps on W{l_brace}110{r_brace}

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.2910· OSTI ID:288883

Xu, W; Adams, J B ^[1]; Einstein, T L ^[2]

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1. Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 105 South Goodwin Avenue, Urbana, Illinois 61801 (United States)
2. Department of Physics, University of Maryland, College Park, Maryland 20742-4111 (United States)

Using a modified fourth-moment approximation to tight-binding theory, we have carried out a systematic study of the energetics of steps and kinks on the W{l_brace}110{r_brace} surface. This model predicts an oscillatory interaction (as a function of separation) between isolated stable steps on the W{l_brace}110{r_brace} surface, whereas previous studies of step-step interactions on late transition and noble metals with the embedded atom method found a purely repulsive, inverse-square decay. The oscillations are similar to those found by scanning tunneling microscope measurements of vicinal Cu{l_brace}100{r_brace} and Ag{l_brace}110{r_brace} systems. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: University of Illinois
• DOE Contract Number: AC02-76ER01198
• OSTI ID: 288883
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 4 Vol. 54; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
CRYSTAL GROWTH
FORMATION FREE ENERGY
KINKS
MONOCRYSTALS
OSCILLATIONS
SURFACE PROPERTIES
TIGHT BINDING APPROXIMATION
TUNGSTEN