scholarly journals Theory of surface Andreev bound states and tunneling spectroscopy in three-dimensional chiral superconductors

2017 ◽  
Vol 95 (10) ◽  
Author(s):  
Shun Tamura ◽  
Shingo Kobayashi ◽  
Lu Bo ◽  
Yukio Tanaka
Keyword(s):  
Bound States ◽  
Three Dimensional ◽  
Tunneling Spectroscopy ◽  
Andreev Bound States ◽  
Surface Andreev Bound States

Suppressed Andreev reflection and helical Andreev bound states in triplet superconductor three-dimensional topological insulator

2015 ◽  
Vol 29 (04) ◽  
pp. 1550018 ◽  
Author(s):  
M. Khezerlou ◽  
H. Goudarzi
Keyword(s):  
Topological Insulator ◽  
Bound States ◽  
Andreev Reflection ◽  
Chemical Potential ◽  
Three Dimensional ◽  
P Wave ◽  
Superconducting Gap ◽  
Tunneling Conductance ◽  
Andreev Bound States ◽  
Josephson Supercurrent

Effect of proximity-induced unconventional p-wave superconductivity in a three-dimensional topological insulator-based S/F/S structure on the Andreev bound states (ABSs) and Josephson supercurrent is studied. We investigate, in detail, the suppression of Andreev reflection and helical ABSs in the presence of three types of triplet superconducting gap. The magnetization of ferromagnetic section is perpendicular to the surface of junction. The influence of such features on the supercurrent flow on the surface of the topological insulator is studied. We carry out our goal by introducing a relevant form of Dirac spinors for gapless renormalized by chemical potential μ excitation states. Therefore, it enables us to consider the virtual Andreev process, simultaneously, and we propose to investigate it in a tunneling conductance junction. It is shown that the results obtained in this case are completely different from those in conventional superconductivity, as s- or d-waves, for example, the magnetization is found to decrease the gap for px and px+ipy case, whereas increase it for py order. Strongly suppressed Andreev reflection is demonstrated.

scholarly journals Evidence for Surface Andreev Bound States in Cuprate Superconductors from Penetration Depth Measurements

2001 ◽  
Vol 86 (6) ◽  
pp. 1074-1077 ◽  
Author(s):  
A. Carrington ◽  
F. Manzano ◽  
R. Prozorov ◽  
R. W. Giannetta ◽  
N. Kameda ◽  
...  
Keyword(s):  
Penetration Depth ◽  
Bound States ◽  
Cuprate Superconductors ◽  
Andreev Bound States ◽  
Surface Andreev Bound States

Surface Andreev bound states of the superfluid 3He B phase

2011 ◽  
Vol 43 (3) ◽  
pp. 718-721
Author(s):  
Ryuji Nomura ◽  
Satoshi Murakawa ◽  
Yuichiro Wada ◽  
Yuta Tamura ◽  
Masahiro Wasai ◽  
...  
Keyword(s):  
Bound States ◽  
Superfluid 3He ◽  
Andreev Bound States ◽  
Surface Andreev Bound States
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