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SIMON is a sophisticated multipurpose simulator for single-electron devices and circuits. It features a graphical circuit editor embedded in a graphical user interface as well as the simulation of co-tunnel events and a single step interactive analysis mode. It supports energy dependent density of states and is able to calculate stability plots.
[Please note that this software is for 32bit architectures. To run on 64bit computer you could do:
- WINDOWS: 'Windows XP Mode' and 'Windows Virtual PC'. Alternatively you can use a virtual machine.
- downloaded Virtua Box: https://www.virtualbox.org/ (With this program one can create virtual computers in any system.)
- Create a partition for Win XP and install Win XP SP3 32bit by means of an .iso file.
- Once Win is installed activate the USB sharing between the virtual machine and the real one and transfer Simon21.exe file.
- Install Simon.
- LINUX: you have to add the i386 architecture to multi-architecture Ubuntu system:
- sudo dpkg --add-architecture i386
- sudo apt-get update
- sudo apt-get install libc6:i386 libncurses5:i386 libstdc++6:i386
- (you may also need) sudo apt-get install multiarch-support
Features of SIMON 2.0:
- STABILITY PLOT
- traditional stability plot with two voltages as x- and y-axis
- one axis can be the temperature
- one or both axis can be a capacitance or resistance
- differentiation in x or y direction possible
- NORMAL RESISTORS
- normal resistors allow the modeling of more complex and realistic
- CURRENT SOURCES
- current sources can be specified with a certain charge-granularity,
which allows the modeling of electron injectors/pumps/turnstiles
in a very easy manner
- ENERGY DEPENDENT DENSITY OF STATES
- The tunnel model has been improved by incorporating three
kinds of density of states functions
- constant with optional bandgap (metallic)
- square-root with bandgap (semiconductor-like)
- x/(x2-1)1/2 with bandgap (superconductor-like)
- discrete energy levels are modeled as gaussian functions,
with mean, width, and height.
- SUPPORT FOR SUPERCONDUCTING TUNNEL JUNCTIONS
- FULL SUPPORT FOR LINUX
- SIMON is shipped in a software package where all necessary
libraries (tcl/tk) are wrapped into the application. Hence no
need to install any 3rd party tools to run SIMON on Linux. The
installation is as easy as copying a file into a subdirectory.
- EASY TO USE
- simple automatic installation for Windows operating systems
- graphical user interface
- graphical circuit editor (drag and drop assembly of circuits;
few mouse clicks and your circuit is assembled)
- graphical visualization of simulation results (you can plot
many graphs in one diagram; compare results from different simulations)
- co-tunneling is simulated up to a user specified order
- two different co-tunnel simulation algorithms are available
- INTERACTIVE SINGLE-STEP MODE
- single electrons can be forced to tunnel through particular
tunnel junctions in an interactive fashion
- the system energy, all node voltages, and all node charges
are updated automatically
LICENSOR and AUTHOR:
Dipl.-Ing. Dr. Christoph Wasshuber
14 Durham Street
Somerville, MA 02143
LICENSOR grants to the purchaser of the license (hereinafter
called LICENSEE) of the SIMON-Software-Package (hereinafter called
SIMON) a non-exclusive license to use SIMON on one computer and
upon the terms and conditions hereinafter set out.
1. LICENSEE acknowledges that the code of SIMON which
has been originally developed by Dipl.-Ing. Dr. Christoph Wasshuber
is supplied "as is", without any accompanying maintenance
services from the LICENSOR and AUTHOR.
EDUCATIONAL and CAMPUS License:
2. This is an EDUCATIONAL LICENSE and therefore SIMON
shall be used only for educational or research purposes. The
use for commercial purposes is strictly prohibited.
COMMERCIAL and DEVELOPER License:
2. This is a COMMERCIAL LICENSE and therefore SIMON can
be used for commercial purposes.
3. LICENSEE agrees that any output of SIMON and any
results obtained with SIMON will bear the subscript:
"SIMON - Simulation of Nano Structures - Christoph
4. LICENSEE agrees to reference in any publication
which directly or indirectly uses results obtained by SIMON the
"Computational Single-Electronics", Christoph
Wasshuber, 2001, Springer-Verlag,
5. LICENSEE agrees to notify the LICENSOR by email,
or regular mail, of every publication, where output or results
obtained with SIMON have been used, and to send a copy or reprint
of the same publication to the LICENSOR (address
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