D. Ehm

Surface and interface states on adsorbate covered noble metal surfaces

Abstract We present a systematic photoemission study of the influence of a one-monolayer rare gas coverage on the Shockley-type surface state on Ag(1xa01xa01) and Cu(1xa01xa01) surfaces. Depending on the rare gas––we used Ar, Kr and Xe as adsorbates––the surface state shows a characteristic shift towards the Fermi energy, whereas the spectral line-shape and the effective mass remain unchanged within the experimental uncertainties (energy resolution Δ E ≈3.5 meV).

Temperature Dependence of the Kondo Resonance and Its Satellites in CeCu2Si2

We present high-resolution photoemission spectroscopy studies on the Kondo resonance of the strongly correlated Ce system CeCu2Si2. By exploiting the thermal broadening of the Fermi edge we analyze position, spectral weight, and temperature dependence of the low-energy 4f spectral features, whose major weight lies above the Fermi level E(F). We also present theoretical predictions based on the single-impurity Anderson model using an extended noncrossing approximation, including all spin-orbit and crystal field splittings of the 4f states. The excellent agreement between theory and experiment provides strong evidence that the spectral properties of CeCu2Si2 can be described by single-impurity Kondo physics down to T approximately 5 K.

High-resolution photoemission study on low-Tk Ce systems : Kondo resonance, crystal field structures, and their temperature dependence

We present a high-resolution photoemission study on the strongly correlated Ce compounds

Electron-phonon coupling and its evidence in the photoemission spectra of lead.

mathrm{Ce}{mathrm{Cu}}_{6}

Atomic correlations in itinerant ferromagnets: Quasi-particle bands of nickel

,

About the stability of noble-metal surfaces during VUV-photoemission experiments

mathrm{Ce}{mathrm{Cu}}_{2}{mathrm{Si}}_{2}

Structure and transport in multi-orbital Kondo systems

,

Quantitative line shape analysis of the Kondo resonance of cerium compounds

mathrm{Ce}{mathrm{Ru}}_{2}{mathrm{Si}}_{2}

High-resolution photoemission spectroscopy on intermediate valent Yb-compounds: Predictions of the Anderson impurity model

,

Direct measurements of the L -gap surface states on the (111) face of noble metals by photoelectron spectroscopy

mathrm{Ce}{mathrm{Ni}}_{2}{mathrm{Ge}}_{2}