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Structural phase transitions in two-dimensional systems: Pb/Ge(111) and Sn/Ge(111)
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Andrés Cano
Published/Copyright:
September 25, 2009
Abstract
The adsorption systems Pb/Ge(111) and Sn/Ge(111) exhibit temperature induced structural phase transitions. We report here a phenomenological analysis of these phase transitions starting from Landau theory. On the basis of symmetry arguments, we show that essential differences are expected theoretically for the critical behav ior of the two interfaces. The influence of hopping defects in these systems is treated using a Landau-like approach. This approach gives us a consistent and general manner to interpret the existing experimental data for these interfaces.
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Published Online: 2009-9-25
Published in Print: 2005-8-1
© by Oldenbourg Wissenschaftsverlag, München
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Articles in the same Issue
- Phase Transitions
- Structural phase transitions in two-dimensional systems: Pb/Ge(111) and Sn/Ge(111)
- Theoretical approach to reconstructive and morphotropic phase transitions
- Surface relaxations at mineral surfaces
- Methods for pseudosymmetry evaluation: a comparison between the atomic displacements and electron density approaches
- Revised prediction of B1 to B2 phase transition pressures in YbN, YbP and YbAs
- Crossover from classical to 3d-Ising critical behaviour near the antiferrodistortive phase transition of lawsonite
- CaZrGeO5 and the triclinic instability of the titanite structure type
- The high-pressure structural phase transitions of sodium bismuth titanate
- Ferroelastic phase transitions and domain structures in powders
- Phase transitions in BaTiO3: a high-pressure neutron diffraction study
- Nanoscale phase transformations in relaxor-ferroelectric lead scandium tantalate and lead scandium niobate
- On the nanostructure of radiation-amorphized zircon and pyrochlores: a small-angle x-ray scattering study
