From faa54f36921db3c7d7992dc63f89bd44522a3d39 Mon Sep 17 00:00:00 2001
From: Mathieu Istas <mathieu.istas@cea.fr>
Date: Mon, 2 Nov 2015 14:54:56 +0100
Subject: [PATCH] fix ab_ring hopping
---
doc/source/tutorial/ab_ring.py | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/doc/source/tutorial/ab_ring.py b/doc/source/tutorial/ab_ring.py
index bd23bbf1..5df7ecda 100644
--- a/doc/source/tutorial/ab_ring.py
+++ b/doc/source/tutorial/ab_ring.py
@@ -50,8 +50,8 @@ def make_system(a=1, t=1.0, W=10, r1=10, r2=20):
# define the modified hoppings as a function that takes the flux as its
# parameter phi.
#HIDDEN_BEGIN_lvkt
- def fluxphase(site1, site2, phi):
- return exp(1j * phi)
+ def hopping_phase(site1, site2, phi):
+ return -t * exp(1j * phi)
def crosses_branchcut(hop):
ix0, iy0 = hop[0].tag
@@ -65,7 +65,7 @@ def make_system(a=1, t=1.0, W=10, r1=10, r2=20):
for hop in kwant.builder.HoppingKind((1, 0), lat, lat)(sys):
if crosses_branchcut(hop):
yield hop
- sys[hops_across_cut] = fluxphase
+ sys[hops_across_cut] = hopping_phase
#HIDDEN_END_lvkt
#### Define the leads. ####
--
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