| About this Abstract |
| Meeting |
2011 Electronic Materials Conference
|
| Symposium
|
2011 Electronic Materials Conference
|
| Presentation Title |
BB1, Local Density of States and Semimetallic Behavior of Rare Earth-V Nanoparticles Embedded in a III-V Semiconductor Matrix |
| Author(s) |
Jason Kawasaki, Rainer Timm, Trevor Buehl, Edvin Lundgren, Arthur Gossard, Anders Mikkelsen, Chris Palmstrom |
| On-Site Speaker (Planned) |
Jason Kawasaki |
| Abstract Scope |
The atomic and electronic structure of molecular beam epitaxy (MBE)-grown ErAs nanostructures embedded within a GaAs matrix are examined via cross-sectional scanning tunneling microscopy (STM) and spectroscopy (STS). Tunneling current I(V) and differential conductance dI/dV spectra show that for both ErAs nanoparticles and nanorods the local density of states (LDOS) exhibits a sharp but finite minimum at the Fermi level, demonstrating that both the particles and rods are semimetallic and not semiconducting. This observation lies in contrast to previous models of quantum confinement in ErAs. We also use STS to measure changes local in the density of states across the ErAs/GaAs interface and discuss the formation of interface states and band bending at the interface. |
| Proceedings Inclusion? |
Undecided |