Patrick Kraus

Surface Structure of Bi(111) from Helium Atom Scattering Measurements. Inelastic Close-Coupling Formalism.

Elastic and inelastic close-coupling (CC) calculations have been used to extract information about the corrugation amplitude and the surface vibrational atomic displacement by fitting to several experimental diffraction patterns. To model the three-dimensional interaction between the He atom and the Bi(111) surface under investigation, a corrugated Morse potential has been assumed. Two different types of calculations are used to obtain theoretical diffraction intensities at three surface temperatures along the two symmetry directions. Type one consists of solving the elastic CC (eCC) and attenuating the corresponding diffraction intensities by a global Debye–Waller (DW) factor. The second one, within a unitary theory, is derived from merely solving the inelastic CC (iCC) equations, where no DW factor is necessary to include. While both methods arrive at similar predictions for the peak-to-peak corrugation value, the variance of the value obtained by the iCC method is much better. Furthermore, the more extensive calculation is better suited to model the temperature induced signal asymmetries and renders the inclusion for a second Debye temperature for the diffraction peaks futile.

Electron-phonon coupling and surface Debye temperature of Bi2Te3(111) from helium atom scattering

We have studied the topological insulator Bi

Vibrational dynamics and surface structure of Bi(111) from helium atom scattering measurements

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Helium atom scattering investigation of the Sb(111) surface.

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Adhesion properties of hydrogen on Sb(111) probed by helium atom scattering

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Surface and subsurface phonons of Bi(111) measured with helium atom scattering

(111) by means of helium atom scattering. The average electron-phonon coupling

Helium-surface interaction potential of Sb(111) from scattering experiments and close-coupling calculations

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Resonance-enhanced inelastic He-atom scattering from subsurface optical phonons of Bi(111)

of Bi

A comparative study of the He–Sb(111) interaction potential from close-coupling calculations and helium atom scattering experiments

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Surface Debye temperature and vibrational dynamics of Antimony(111) from helium atom scattering measurements

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