Internal photoemission of electrons from 2D semiconductor/3D metal barrier structures

Schottky barrier heights of Pt and lr silicides formed on Si/SiGe measured by internal photoemission

Lowered-barrier-height silicide Schottky diodes are desirable for obtaining longer cutoff-wavelength Si-based infrared detectors. Silicide Schottky diodes have been fabricated by the reaction of evaporated Pt and Ir films on p-Si,-.Ge, alloys with a thin Si capping layer. The onset of metal-SiGe reactions was controlled by the deposited metal thickness. Internal photoemission measurements were ...

Time-resolved photoemission of correlated electrons driven out of equilibrium

B. Moritz,1,2 T. P. Devereaux,1,3 and J. K. Freericks4 1Stanford Institute for Materials and Energy Science (SIMES), SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA 2Department of Physics and Astrophysics, University of North Dakota, Grand Forks, North Dakota 58202, USA 3Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA 4Depa...

Metal-organic extended 2D structures: Fe-PTCDA on Au(111).

In this work we combine organic molecules of 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) with iron atoms on an Au (111) substrate in ultra-high vacuum conditions at different temperatures. By means of scanning tunnelling microscopy (STM) we study the formation of stable 2D metal-organic structures. We show that at certain growth conditions (temperature, time and coverage) stable 'ladde...

Angle-Resolved Photoemission of Solvated Electrons in Sodium-Doped Clusters.

Angle-resolved photoelectron spectroscopy of the unpaired electron in sodium-doped water, methanol, ammonia, and dimethyl ether clusters is presented. The experimental observations and the complementary calculations are consistent with surface electrons for the cluster size range studied. Evidence against internally solvated electrons is provided by the photoelectron angular distribution. The t...

Photoemission Studies of Metal-semiconductor Interfaces