Angle‐Resolved Photoemission as a Tool for the Study of Surfaces

Metal hybridization and electronic structure of Tris(8-hydroxyquinolato)aluminum (Alq3)

“…Polarization dependent photoemission was accomplished by varying the incident angle of the linearly polarized synchrotron light with the following provisions: s + p polarization is given by 45° incidence with respect to surface normal; and, p polarization is given by 70° incidence, to yield the vector potential A more normal than parallel to the surface. The polarization dependence can be coupled to the photoemission selection rules under the local point group of adsorbed Alq 3 to yield symmetry specific molecular orbital representations as a function of binding energy; the details of selection rule formalism are laid out elsewhere [9]. Energy dependent photoemission was employed to determine the bandwidth of molecular orbitals normal to the interface (for a crystalline overlayer thickness which did not exceed the mean free path of the substrate and its overlayer).…”

“…Figure 1 shows the light polarization dependent photoemission at incident photon energies of 32 and 72.8 eV for Alq 3 adsorbed on Au(1 1 1) from vapor. The light polarization dependence, of the photoemission spectra, reveals that the Alq 3 molecule, adsorbed on gold, does preserve some symmetry [9], particularly in the vicinity of the Al metal center. Although the light polarization dependence is different at different photon energies, the polarization dependence is significant for the photoemission feature at −7.8 eV binding energy.…”

The electronic structure of clean and adsorbate-covered Bi2Se3: an angle-resolved photoemission study

“…[49][50][51][52][53][54]), it is useful to note a few details that will be exploited in the experimental investigation presented in the following part.…”

Angle resolved photoemission from Cu single crystals: Known facts and a few surprises about the photoemission process

“…Angle resolved photoemission has been developed since 35 years ago as a method to investigate the band structure of the electronic states in solids and at surfaces (1)(2)(3)(4)(5). With the use of a continuously tunable excitation source, such as synchrotron radiation, it has become the experimental method of choice, when the momentum resolved energy band structure in solids, including their surfaces, are to be investigated in detail.…”