scholarly journals Magnetotunneling spectroscopy as a probe for pairing symmetry determination in quasi-two-dimensional anisotropic superconductors

2002 ◽  
Vol 66 (17) ◽  
Author(s):  
Y. Tanuma ◽  
Y. Tanaka ◽  
K. Kuroki ◽  
S. Kashiwaya
Keyword(s):  
Pairing Symmetry ◽  
Two Dimensional ◽  
Anisotropic Superconductors

scholarly journals Phase diagram of the pairing symmetry in two-dimensional strong-coupling superconductors

1997 ◽  
Vol 279 (1-2) ◽  
pp. 127-135 ◽  
Author(s):  
Katsuji Sakai ◽  
Yasushi Yokoya ◽  
Yoshiko Oi Nakamura
Keyword(s):  
Phase Diagram ◽  
Strong Coupling ◽  
Pairing Symmetry ◽  
Two Dimensional

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.

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

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