scholarly journals Impurity Effects on Vortex Core States in Topological s-Wave Superconductor: Analysis based on Andreev Approximation

2015 ◽  
Vol 65 ◽  
pp. 89-92
Author(s):  
Yusuke Masaki ◽  
Yusuke Kato
Keyword(s):  
Vortex Core ◽  
Impurity Effects ◽  
S Wave

scholarly journals Effect of Born and unitary impurity scattering on the Kramer–Pesch shrinkage of a vortex core in an s-wave superconductor

2013 ◽  
Vol 484 ◽  
pp. 69-73 ◽  
Author(s):  
Nobuhiko Hayashi ◽  
Yoichi Higashi ◽  
Noriyuki Nakai ◽  
Hisataka Suematsu
Keyword(s):  
Vortex Core ◽  
Impurity Scattering ◽  
S Wave

scholarly journals Relation of Superconducting Pairing Symmetry and Non-Magnetic Impurity Effects in Vortex States

Symmetry ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 175
Author(s):  
Yasuaki Sera ◽  
Takahiro Ueda ◽  
Hiroto Adachi ◽  
Masanori Ichioka
Keyword(s):  
Vortex Core ◽  
Magnetic Impurity ◽  
Impurity Scattering ◽  
Pairing Symmetry ◽  
Impurity Effects ◽  
Vortex States ◽  
Scattering Rate ◽  
Pairing Function ◽  
Sign Change ◽  
Anisotropic Superconductors

Non-magnetic impurity scattering effects on the vortex core states are theoretically studied to clarify the contributions from the sign-change of the pairing function in anisotropic superconductors. The vortex states are calculated by the Eilenberger theory in superconductors with p x -wave pairing symmetry, as well as the corresponding anisotropic s-wave symmetry. From the spatial structure of the pair potential and the local electronic states around a vortex, we examine the differences between anisotropic superconductors with and without sign-change of the pairing function, and estimate how twofold symmetric vortex core images change with increasing the impurity scattering rate both in the Born and the unitary limits. We found that twofold symmetric vortex core image of zero-energy local density of states changes the orientation of the twofold symmetry with increasing the scattering rate when the sign change occurs in the pairing function. Without the sign change, the vortex core shape reduces to circular one with approaching dirty cases. These results of the impurity effects are valuable for identifying the pairing symmetry by observation of the vortex core image by the STM observation.

scholarly journals Impact of topology on the impurity effects in extended s -wave superconductors with spin-orbit coupling

2019 ◽  
Vol 99 (1) ◽  
Author(s):  
M. Mashkoori ◽  
A. G. Moghaddam ◽  
M. H. Hajibabaee ◽  
A. M. Black-Schaffer ◽  
F. Parhizgar
Keyword(s):  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Impurity Effects ◽  
S Wave
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