https://doi.org/10.1140/epjb/e2013-40512-6
Regular Article
Quantum interference effects induced by multiple magnetic impurities on a triangular lattice f-wave superconductor
1
Department of Physics, Zhejiang University of
Technology, Hangzhou
310023, P.R.
China
2
National Laboratory of Solid State Microstructures and Department
of Physics, Nanjing University, Nanjing
210093, P.R.
China
a e-mail: xjzuo@yahoo.com.cn
Received:
21
May
2013
Received in final form:
17
July
2013
Published online:
18
September
2013
The effects of multi-impurity quantum interference on triangular lattice f-wave superconductors are studied by self-consistently solving Bogoliubov-de Gennes equations within the t−t′−J−V model. An overall phase diagram is presented, which shows that f-wave superconductivity dominates near 0.3 doping. Rich phenomena are induced by quantum interference effects, such as periodic modulations in charge orders, pyramid frustum structures, and a magnetic moment reverse transition, which are qualitatively different from the single-impurity case. We also examine the local density of states to show how localized quasiparticle states are created at or near the impurity sites, which can be directly measured by scanning tunneling microscopy experiments.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2013
