Monte Carlo simulations of ballistic-electron-emission-microscopy imaging and spectroscopy of buried mesoscopic structures

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.R16033· OSTI ID:530222

Lee, E Y; Narayanamurti, V ^[1]; Smith, D L ^[2]

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1. Electrical and Computer Engineering Department, University of California, Santa Barbara, California 93106 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Monte Carlo simulations of the transport of electrons injected into the {Gamma} valley of GaAs are performed for ballistic-electron-emission-microscopy (BEEM) imaging and spatially resolved spectroscopy of model quantum dots and quantum wires buried beneath the Au-GaAs interface. To determine the spatial resolution and the energy resolution of BEEM for such buried mesoscopic structures, the current fluxes and the electron normal wave vector distributions are obtained as a function of the depth from the Au-GaAs interface. The BEEM current cross sections and the spatially resolved BEEM spectra on and off these structures are calculated in order to study their dependence on the depth and the scanning-tunneling microscope tip-to-sample bias. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 530222
• Journal Information: Physical Review, B: Condensed Matter, Vol. 55, Issue 24; Other Information: PBD: Jun 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
GALLIUM ARSENIDES
CHARGED-PARTICLE TRANSPORT
GOLD
INTERFACES
SPATIAL RESOLUTION
SCANNING ELECTRON MICROSCOPY
MONTE CARLO METHOD
ELECTRON DENSITY
SIMULATION
IMAGES