Journal Article10.1103/PHYSREVLETT.38.1138
Phase transition on Mo(100) and W(100) surfaces
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TL;DR: In this paper, low-energy-electron-diffraction studies of carefully cleaned and annealed surfaces of molybdenum and tungsten (100) showed that a phase transition can be induced by lowering the temperature below 300 K. The phase transition is reversible and seemingly second order.
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Abstract: Low-energy-electron-diffraction studies of carefully cleaned and annealed surfaces of molybdenum (100) and tungsten (100) show that a phase transition can be induced by lowering the temperature below 300 K. The periodicity of the "reconstructed" surface is believed to be due to the formation of a displacement wave with a wavelength which is $2a$ ($a$ is the lattice parameter) for W(100) and $\ensuremath{\sim}2.2a$ for Mo(100). The phase transition is reversible and seemingly second order. It appears possible that displacements of this type also occur in chemisorption on these surfaces.
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Citations
Epitaxial growth of UHV magnetron sputtered Mo thin films on MgO(001) substrates, oxygen segregation and surface reconstructions
Erik B. Svedberg,TS Jemander,Nian Lin,Ragnar Erlandsson,Göran V. Hansson,Jens Birch,J.-E. Sundgren +6 more
TL;DR: In this paper, the epitaxial growth of Mo thin films on MgO(001) substrates by ultrahigh vacuum (UHV) d.c. magnetron sputter deposition has been shown independently by in situ low energy electron diffraction.
8
Instabilities and reconstructions on solid surfaces: basic theoretical notions and examples
TL;DR: In this paper, the authors considered the phenomenon of crystal surface instability and reconstruction and discussed the properties of the surface electronic structure and the chemical bonding at the surface from a microscopic and phenomenological point of view.
8
Theoretical Analyses on W(100) Surface Reconstruction Phase Transition and H Adsorption Effects by Monte Carlo Simulation
TL;DR: The theoretical understanding on the W(100) surface reconstruction and hydrogen adsorp- tion effects by Monte Carlo simulation is reviewed after a brief survey of experimental and theoretical results on this surface as mentioned in this paper.
8
Fast He atom scattering from a tungsten (100) surface
Henning B. Nielsen,T.A. Delchar +1 more
TL;DR: In this paper, a preliminary study has been carried out of the variation in backscattered intensity versus polar angle for fast (150-1000 eV) atoms incident along the 〈110〉 azimuth of a W(100) surface, both clean and oxygen covered.
8
Structure of the p(2×1)-oxygen/Mo0.75Re0.25(001) surface studied by low energy Li+ ion scattering
TL;DR: In this paper, low energy alkali ion scattering, low energy electron diffraction and Auger electron spectroscopy were used to study the adsorption of oxygen on the Mo 0.75 Re 0.25 (001) surface.
8
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Peder J. Estrup,J. Anderson +1 more
TL;DR: In this article, the interaction of hydrogen with a single-crystal tungsten (100) surface has been studied, using LEED in conjunction with flashdesorption and surface potential measurements.
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A LEED study of structures produced by H2 on (100) W
K. Yonehara,Lanny D. Schmidt +1 more
TL;DR: In this paper, the LEED structures resulting from hydrogen adsorption on (100)W are studied as functions of hydrogen coverage and surface temperature for temperatures above 78 °K, and it is suggested that this structure on the clean surface may be due to structural rearrangement of tungsten or an adsorbed state of hydrogen which goes into solution upon heating.
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Surface structures of W(110) and W(100) faces by the dynamical LEED approach
M. A. Van Hove,S. Y. Tong +1 more
TL;DR: In this article, the surface structures of W(110) and W(100) faces were examined by means of an efficient dynamical LEED method, and it was found that the W (110) surface maintains the bulk structure, despite the possibility for the top tungsten atoms to settle into sites of higher coordination number.
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