update corbino example

content/index.txt

@@ -74,15 +74,25 @@ rather subtle aspects of the experiments could be reproduce. Such type of
 but also as an aid in designing the sample geometry or in the choice of
 materials.
 
-
 conductance of a Corbino disk in a quantum Hall regime
 ......................................................
 
 .. container:: leftside
 
-   .. image:: corbino.png
+   .. image:: corbino-layout.svg
+      :width: 15em
+
+
+.. container:: rightside
+
+   .. image:: corbino-conductance.png
+
+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.
 
-Transport properties of a Corbino disk across a quantum Hall transition. Left
-panel: winding number of the reflection matrix, which has to change from 0 to 1
-across the transition. Right panel: 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>`_.