1
2
Physical Review B Physical review / B, 90 90 (2014 2014) 6 6, S. 064406 064406
OpenAccess 
3
4
5
6
Physical Review B Physical review / B, 90 90 (2014 2014) 22 22, S. 220403 220403
OpenAccess  OpenAccess 
7
8
9
10
11
12
13
Journal of physics / Condensed matter, 25 (2013) 16, S. 163201
14
15
16
17
18
19
20