I am a PhD student of Hong Kong University of Science and Technology. I
want to use KWANT to caculate Hall resistance of a Hall bar structure.We
can get the conductance between 6 electrodes, but how to get hall
resistance? Can you give me some help? Thank you very much.
Hi, I'm just starting to work with KWANT.
I need to calculate conductivity of a graphene layer with defect (watch the picture).
I have coordinates of atoms of this layer. As in an example "2.5 Beyond square lattices: graphene" to set the coordinates?
Dear Kwant Community,
My name is Adrian Nosek, I am a graduate student at the University of
California Riverside in Condensed Matter Physics, and I was wondering
whether there are any plans to extend Kwant and let it run on parallel
machines, so that systems of bigger sample size could be modeled?
I attempted to calculate the conductivity of a sample with 200000 atoms (I
believe that's what it was but its been a while since I ran the simulation)
and this is where my machine ran out of RAM.
I really like the idea of simulating my experiment using Kwant, but is
there any advantage to model let's say a 4 by 20 micron size system using
Kwant vs a classical approach? I believe the mean free paths of electrons
in graphene can easily reach micron-long pathways in high mobility
graphene-hBN sandwiches, so that is the reason why I am asking.
Also, would it make any sense to implement such a simulation in the context
of Big Data Analysis, where analysis is performed on parallel working
machines where one could diagonalize such a big Hamiltonian, e.g. using
Thanks for your answers,
I'm having trouble to "import kwant" via iPython interfaces (Spyder). I can
run the python script via "python scriptname.py" but when I try "spyder"
and then "scriptname.py" I get the error "no module named kwant". Do you
know what I have to do so that iPython recognizes the module?
I would like to install Kwant using Python 3 under OS X (on my Macbook Pro, OS X 10.6).
For Mac OS X however, the guidelines on the Kwant webside cover only the Python 2 installation.
Is there a way to install Kwant using Python 3 on a Mac?
Hi Stefan (and anyone else interested),
Some time ago you tried to get Kwant to run with MUMPS that uses
MKL. Branislav Nikolic (in CC) is interested in doing the same.
In the end, did you succeed? I know that threaded OpenBLAS scales
very poorly. Is MKL doing better?