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Study of Electron Transport in Semiconductor Nanodevices (Paperback)
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Study of Electron Transport in Semiconductor Nanodevices (Paperback)
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Total price: R1,697
Discovery Miles: 16 970
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Scanning gate microscopy (SGM), developed in the late 1990's, has
become a powerful tool to investigate the local electronic
properties in semiconductor nano devices. SGM is based on the AFM
technique but the metallic tip is used as a movable gate
capacitively coupled to the device, and the electron transport
property is studied on influence of this gate, providing spatial
information with high resolution. This thesis presents the SGM
measurement results on various nano devices, all of which are
fabricated from InGaAs/InAlAs heterostructures containing a high
mobility 2DEG located a few tens of nanometers below the surface.
In a work on Braess paradox, with the help of numerical
simulations, we discover a Braess paradox effect by modulating a
channel width in a 'double-ring' shaped mesoscopic device in
analogy with the one that occurs in a classical network. By a
detailed study of the conductance changes, we discover several
charge traps from the SGM map, and propose a model to interpret the
conductance change with the presence of charge traps. We develop a
method to directly image the charge traps by transconductance
measurements with a voltage modulation on the tip.
General
Imprint: |
Lap Lambert Academic Publishing
|
Country of origin: |
Germany |
Release date: |
February 2012 |
First published: |
February 2012 |
Authors: |
Peng Liu
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Dimensions: |
229 x 152 x 10mm (L x W x T) |
Format: |
Paperback - Trade
|
Pages: |
172 |
ISBN-13: |
978-3-8473-2827-8 |
Categories: |
Books >
Science & Mathematics >
Physics >
General
|
LSN: |
3-8473-2827-1 |
Barcode: |
9783847328278 |
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