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. But you can run it for example on 64bit Windows 7 PC with '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.
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