Unoccupied electronic states of 2D Si on Ag- 3 -Si(111)

Fermi surfaces of surface states on Si „ 111 ... - Ag , Au

Metallic surface states on semiconducting substrates provide an opportunity to study low-dimensional electrons decoupled from the bulk. Angle resolved photoemission is used to determine the Fermi surface, group velocity, and effective mass for surface states on Si(111))3)-Ag, Si(111))3)-Au, and Si(111)A21 3A21-(Ag1Au). For Si(111))3)-Ag the Fermi surface consists of small electron pockets popul...

In Situ Ordering of FePt Thin Films by Using Ag / Si and Ag / Mn 3 Si / Ag / Si Templates

In situ ordering of FePt thin films by sputtering onto Ag/Si and Ag/Mn3Si/Ag/Si templates has been demonstrated. Due to the evolution from island-like to a continuous film structure as a function of Ag thickness, the ordering and orientation of the FePt films both change with Ag thickness. A continuous (002) Ag film results in a greater L10 phase formation with -axis oriented both perpendicular...

Surface electronic structure of K- and Cs-induced √21×√21 phases on Ag∕Si(111)√3×√3

Time-resolved two-photon photoemission of unoccupied electronic states of periodically rippled graphene on Ru(0001).

The unoccupied electronic states of epitaxially grown graphene on Ru(0001) have been explored by time- and angle-resolved two-photon photoemission. We identify a Ru derived resonance and a Ru/graphene interface state at 0.91 and 2.58 eV above the Fermi level, as well as three image-potential derived states close to the vacuum level. The most strongly bound, short-lived, and least dispersing ima...

Deep electronic states in ion-implanted Si

In this paper we present an overview of the deep states present after ion-implantation by various species into n-type silicon, measured by Deep Level Transient Spectroscopy (DLTS) and high resolution Laplace DLTS (LDLTS). Both point and small extended defects are found, prior to any anneal, which can therefore be the precursors to more detrimental defects such as end of range loops. We show tha...