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Commit d1a2e232 authored by Anton Akhmerov's avatar Anton Akhmerov
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use pull- classes for images (fixes #11, partially #12)

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......@@ -20,7 +20,7 @@ summarized as follows:
.. raw:: html
<object type="image/svg+xml" data="kwant-workflow.svgz" width="100%">kwant-workflow.svgz</object>
<object type="image/svg+xml" data="kwant-workflow.svgz" class="img-responsive">kwant-workflow.svgz</object>
Kwant was designed to be easy to use: Section 2 of the `Kwant paper
<http://downloads.kwant-project.org/doc/kwant-paper.pdf>`_ contains a
......@@ -38,37 +38,33 @@ Kwant. The tutorial section of `Kwant documentation <doc/1/>`_ and the
explanations (`zipfile of all examples
<http://downloads.kwant-project.org/examples/kwant-examples-1.0.0.zip>`_).
.. class:: row nomargin
Graphene flake
..............
.. raw:: html
<object type="image/svg+xml" class="col-md-4 img-responsive" data="graphene-edgestate.svgz">graphene-edgestate.svgz</object>
.. container:: col-md-8
<object type="image/svg+xml" class="col-md-4 pull-left img-responsive" data="graphene-edgestate.svgz">graphene-edgestate.svgz</object>
The complete code that constructs the graphene flake shown on the right side is
The complete code that constructs the graphene flake shown on the right side is
.. code:: python
.. code:: python
def disk(pos):
x, y = pos
return x**2 + y**2 < 8**2
def disk(pos):
x, y = pos
return x**2 + y**2 < 8**2
lat = kwant.lattice.honeycomb()
sys = kwant.Builder()
sys[lat.shape(disk, (0, 0))] = 0
sys[lat.neighbors()] = -1
lat = kwant.lattice.honeycomb()
sys = kwant.Builder()
sys[lat.shape(disk, (0, 0))] = 0
sys[lat.neighbors()] = -1
In addition to the flake itself, the image also shows the wave function of a
low energy eigenstate. The size of each circle is proportional to the wave
function probability amplitude on that site. It can be clearly seen that the
wave function is peaked near the zigzag segments of the boundary, as `expected
<http://arxiv.org/abs/1003.4602>`_ for graphene quantum dots.
In addition to the flake itself, the image also shows the wave function of a
low energy eigenstate. The size of each circle is proportional to the wave
function probability amplitude on that site. It can be clearly seen that the
wave function is peaked near the zigzag segments of the boundary, as `expected
<http://arxiv.org/abs/1003.4602>`_ for graphene quantum dots.
Taken from the Kwant `plotting tutorial <doc/1/tutorial/tutorial6.html>`_.
Taken from the Kwant `plotting tutorial <doc/1/tutorial/tutorial6.html>`_.
.. class:: row nomargin
......@@ -77,95 +73,80 @@ Quantum Hall effect
.. raw:: html
<object type="image/svg+xml" class="col-md-4 img-responsive" data="qhe-edgestate.svgz">qhe-edgestate.svgz</object>
<object type="image/svg+xml" class="col-md-4 img-responsive pull-left" data="qhe-edgestate.svgz">qhe-edgestate.svgz</object>
.. container:: col-md-4
<object type="image/svg+xml" class="col-md-4 img-responsive pull-right" data="qhe-plateaus.svgz">qhe-plateaus.svgz</object>
One of the most common applications of Kwant is to calculate the conductance of
a nanoelectronic system. The plot on the left shows the conductance through a
2-d electron gas as a function of magnetic flux. The quantization of
conductance that is visible (plateaus) is the hallmark of the quantum Hall
effect. The third plateau does not develop due to a constriction in the system
that leads to backscattering. The scattering wave function from the left lead
at magnetic field strength corresponding to the middle of the third QHE plateau
is shown on the right.
Taken from example 6 of the `Kwant paper
<http://downloads.kwant-project.org/doc/kwant-paper.pdf>`_.
One of the most common applications of Kwant is to calculate the conductance of
a nanoelectronic system. The plot on the left shows the conductance through a
2-d electron gas as a function of magnetic flux. The quantization of
conductance that is visible (plateaus) is the hallmark of the quantum Hall
effect. The third plateau does not develop due to a constriction in the system
that leads to backscattering. The scattering wave function from the left lead
at magnetic field strength corresponding to the middle of the third QHE plateau
is shown on the right.
.. raw:: html
Taken from example 6 of the `Kwant paper
<http://downloads.kwant-project.org/doc/kwant-paper.pdf>`_.
<object type="image/svg+xml" class="col-md-4 img-responsive" data="qhe-plateaus.svgz">qhe-plateaus.svgz</object>
.. class:: row nomargin
.. class:: row
3-d system: Majorana states
...........................
.. class:: col-md-4
.. class:: img-responsive
.. class:: col-md-4 img-responsive pull-left
.. image:: quantum-wire.png
.. container:: col-md-8
Kwant allows systems of any dimensionality, for example three-dimensional ones.
This image shows a 3-d model of a semiconducting quantum wire (gray cylinder).
The red region is a tunnel barrier, used to measure tunneling conductance, the
blue region is a superconducting electrode. In this simulated device, a
Majorana bound state appears close to the superconducting-normal interface.
Kwant allows systems of any dimensionality, for example three-dimensional ones.
This image shows a 3-d model of a semiconducting quantum wire (gray cylinder).
The red region is a tunnel barrier, used to measure tunneling conductance, the
blue region is a superconducting electrode. In this simulated device, a
Majorana bound state appears close to the superconducting-normal interface.
Taken from an unpublished work by S. Mi, A. R. Akhmerov, and M. Wimmer.
Taken from an unpublished work by S. Mi, A. R. Akhmerov, and M. Wimmer.
.. class:: row nomargin
.. class:: row
Numerical experiment: flying qubit
..................................
.. container:: col-md-8
.. class:: col-md-4 col-sm-12 img-responsive pull-right
Numerical simulations and experimental results for a flying qubit sample made in
a GaAs/GaAlAs heterostrucutre. The Kwant simulations were performed with
particular attention to a realistic model of the confining potential seen by the
electrons. This allows for rather subtle aspects of the experiment could be
reproduced. Such "numerical experiments" can not only be used to interpret the
experimental data but also can help to design the sample geometry and in to
choose the right materials.
Taken from an unpublished work by T. Bautze et al. See Yamamoto et al., `Nature
Nanotechnology 7, 247 (2012) <http://dx.doi.org/doi:10.1038/nnano.2012.28>`_ for
details about the experiment.
.. image:: flying-qubit.png
.. class:: col-md-4
Numerical simulations and experimental results for a flying qubit sample made in
a GaAs/GaAlAs heterostrucutre. The Kwant simulations were performed with
particular attention to a realistic model of the confining potential seen by the
electrons. This allows for rather subtle aspects of the experiment could be
reproduced. Such "numerical experiments" can not only be used to interpret the
experimental data but also can help to design the sample geometry and in to
choose the right materials.
.. class:: img-responsive
Taken from an unpublished work by T. Bautze et al. See Yamamoto et al., `Nature
Nanotechnology 7, 247 (2012) <http://dx.doi.org/doi:10.1038/nnano.2012.28>`_ for
details about the experiment.
.. image:: flying-qubit.png
.. class:: row nomargin
.. class:: row
Conductance of a Corbino disk in a quantum Hall regime
......................................................
.. raw:: html
<object type="image/svg+xml" class="col-md-4 img-responsive" data="corbino-layout.svgz">corbino-layout.svgz</object>
<object type="image/svg+xml" class="col-md-4 col-sm-6 img-responsive pull-left" data="corbino-layout.svgz">corbino-layout.svgz</object>
.. container:: col-md-4
.. class:: col-md-4 col-sm-6 img-responsive pull-right
Transport properties of a Corbino disk across a quantum Hall transition. Left:
geometry of the sample consisting of a ring-shaped two-dimensional electron gas
(grey) in a perpendicular magnetic field. Right: conductance across the
transition, showing quantized conductance peaks.
Taken from I. C. Fulga, F. Hassler, A. R. Akhmerov, C. W. J. Beenakker,
`Phys. Rev. B 84, 245447 (2011)
<http://link.aps.org/doi/10.1103/PhysRevB.84.245447>`_; `arXiv:1110.4280
<http://arxiv.org/abs/1110.4280>`_.
.. class:: col-md-4
.. image:: corbino-conductance.png
.. class:: img-responsive
Transport properties of a Corbino disk across a quantum Hall transition. Left:
geometry of the sample consisting of a ring-shaped two-dimensional electron gas
(grey) in a perpendicular magnetic field. Right: conductance across the
transition, showing quantized conductance peaks.
.. image:: corbino-conductance.png
Taken from I. C. Fulga, F. Hassler, A. R. Akhmerov, C. W. J. Beenakker,
`Phys. Rev. B 84, 245447 (2011)
<http://link.aps.org/doi/10.1103/PhysRevB.84.245447>`_; `arXiv:1110.4280
<http://arxiv.org/abs/1110.4280>`_.
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