No exact match found for Garnier M.G, using Garnier M G instead...
Université de Fribourg

Unusual temperature dependence of the spectral weight near the Fermi level of NdNiO₃ thin films

Schwier, Eike Fabian ; Scherwitzl, R. ; Vydrovà, Z. ; García-Fernández, Mirian ; Gibert, M. ; Zubko, P. ; Garnier, Michael G. ; Triscone, J.-M. ; Aebi, Philipp

In: Physical Review B - Condensed Matter and Materials Physics, 2012, vol. 86, no. 19, p. 195147

We investigate the behavior of the spectral weight near the Fermi level of NdNiO3 thin films as a function of temperature across the metal-to-insulator transition (MIT) by means of ultraviolet photoelectron spectroscopy. The spectral weight was found to exhibit thermal hysteresis, similar to that of the dc conductivity. A detailed analysis of the temperature dependence reveals two distinct...

Université de Fribourg

Valence band electronic structure characterization of the rutile TiO₂ (110)-(1 × 2) reconstructed surface

Sánchez-Sánchez, C. ; Garnier, M.G. ; Aebi, Philipp ; Blanco-Rey, M. ; Andres, P.L. de ; Martín-Gago, J.A. ; López, M.F.

In: Surface Science, 2012, p. -

The electronic structure of the TiO₂ (110)-(1 × 2) surface has been studied by means of angular resolved ultraviolet photoemission spectroscopy (ARUPS). The valence band dispersion along the high symmetry surface directions, [001] and [1–10], has been recorded. The experimental data show no dispersion of the band-gap Ti 3d states. However, the existence of dispersive bands along the [001]...

Université de Fribourg

Scanning tunneling microscopy at multiple voltage biases of stable “ring-like” Ag clusters on Si(111)–(7 × 7)

Mariotti, Nicolas ; Didiot, Clément ; Schwier, E.F. ; Monney, Claude ; Perret-Aebi, Laure-Emmanuelle ; Battaglia, Corsin ; Garnier, M.G. ; Aebi, Philipp

In: Surface Science, 2012, p. -

Since more than twenty years it is known that deposition of Ag onto Si(111)–(7 × 7) leads under certain conditions to the formation of so-called “ring-like” clusters, that are particularly stable among small clusters. In order to resolve their still unknown atomic structure, we performed voltage dependent scanning tunneling microscopy (STM) measurements providing interesting information...

Université de Fribourg

Temperature dependence of the excitonic insulator phase model in 1T-TiSe₂

Monney, Claude ; Cercellier, H. ; Battaglia, Corsin ; Schwier, Eike Fabian ; Didiot, Clément ; Garnier, M.G. ; Beck, Hans ; Aebi, Philipp

In: Physica B: Condensed Matter, 2009, vol. 404, no. 19, p. 3172-3175

Recently, detailed calculations of the excitonic insulator phase model adapted to the case of 1T-TiSe2 have been presented. Through the spectral function theoretical photoemission intensity maps can be generated which are in very good agreement with experiment [H. Cercellier, et al., Phys. Rev. Lett. 99 (2007) 146403]. In this model, excitons condensate in a BCS-like manner and give rise to a...

Université de Fribourg

X-ray photoelectron diffraction study of Cu(1 1 1): Multiple scattering investigation

Despont, L. ; Naumović, Dusanka ; Clerc, F. ; Koitzsch, C. ; Garnier, M.G. ; Abajo, F.J. Garcia de ; Hove, M.A. Van

In: Surface Science, 2006, vol. 600, no. 2, p. 380-385

Multiple scattering theory based on a cluster model is used to simulate full-hemispherical X-ray photoelectron diffraction measurements in order to verify how state of the art multiple scattering simulations are able to reproduce the experiment. This approach is applied to the Cu(1 1 1) surface for two different photoelectron kinetic energies. Differences and similarities between single and...