1
2
3
4
Physical Review B Physical review / B, 90 90 (2014 2014) 7 7, S. 075105 075105
OpenAccess 
5
6
7
8
9
10
11
Physical Review B Physical review / B, 88 88 (2013 2013) 16 16, S. 165136 165136
OpenAccess 
12
Physical Review B Physical review / B, 87 87 (2013 2013) 20 20, S. 205103 205103
OpenAccess 
13
Physical Review A Physical review / A, 88 88 (2013 2013) 4 4, S. 046501 046501
OpenAccess 
14
15
16
17
18
19
20