scholarly journals Theory of nodal s±-wave pairing symmetry in the Pu-based 115 superconductor family

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Tanmoy Das ◽  
Jian-Xin Zhu ◽  
Matthias J. Graf
Keyword(s):  
Pairing Symmetry ◽  
S Wave ◽  
Wave Pairing

TUNNELING SPECTROSCOPY OF THE ELECTRON-DOPED CUPRATE SUPERCONDUCTOR Pr2-xCexCuO4

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3175-3175
Author(s):  
A. BISWAS ◽  
P. FOURNIER ◽  
V. N. SMOLYANINOVA ◽  
H. BALCI ◽  
J. S. HIGGINS ◽  
...  
Keyword(s):  
Normal State ◽  
Cuprate Superconductors ◽  
Point Contact ◽  
Tunneling Spectroscopy ◽  
Pairing Symmetry ◽  
S Wave ◽  
Zero Bias ◽  
Wave Pairing ◽  
Wave Symmetry ◽  
D Wave

The properties of electron(n)-doped cuprate superconductors show significant deviations from those of their hold(p)-doped counterparts. Experiments prior to 2000 suggested an s-wave pairing symmetry as opposed to d-wave pairing symmetry in hole-doped cuprates. Recent experiments have suggested that n-doped cuprates have a d-wave pairing symmetry. However tunneling spectroscopy of these materials have not revealed a zero bias conductance peak (ZBCP), which is a classic signature of d-wave symmetry. We present the first tunneling spectroscopy data on n-doped Pr 2-x Ce x CuO 4 (PCCO) using point contact junctions which show a systematic evolution of the ZBCP. This method of junction fabrication is important as it allows the barrier strength between the normal and the superconducting electrodes to be varied. We show that this is essential to observing the ZBCP. The n-doped cuprates have a low Tc (~25 K ) and Hc2 (~10 T ). The low Hc2 enables us to obtain the normal state in PCCO at low temperatures. We have used this to probe the density of states in the normal state of PCCO. We observe an anomalous gap even in the normal state.1 This normal state gap (NSG) becomes smaller on the over-doped side. We discuss the behavior of this NSG in the context of the pseudogap which has been observed in hole-doped cuprates.

scholarly journals Bulk evidence for s -wave pairing symmetry in electron-doped infinite-layer cuprate Sr 0.9 La 0.1 CuO 2

2005 ◽  
Vol 69 (2) ◽  
pp. 263-269 ◽  
Author(s):  
Z. Y Liu ◽  
H. H Wen ◽  
L Shan ◽  
H. P Yang ◽  
X. F Lu ◽  
...  
Keyword(s):  
Pairing Symmetry ◽  
S Wave ◽  
Infinite Layer ◽  
Wave Pairing

Isotropic s-wave pairing symmetry in non-centrosymmetric Re3W revealed by point-contact spectroscopy

2008 ◽  
Vol 21 (7) ◽  
pp. 075011 ◽  
Author(s):  
Yan Huang ◽  
Jing Yan ◽  
Yonglei Wang ◽  
Lei Shan ◽  
Qiang Luo ◽  
...  
Keyword(s):  
Point Contact ◽  
Pairing Symmetry ◽  
S Wave ◽  
Point Contact Spectroscopy ◽  
Wave Pairing

Effect of single interstitial impurity in iron-based superconductors with sign-changed s-wave pairing symmetry

2015 ◽  
Vol 519 ◽  
pp. 65-70 ◽  
Author(s):  
Xiang-Long Yu ◽  
Da-Yong Liu ◽  
Ya-Min Quan ◽  
Xiao-Jun Zheng ◽  
Liang-Jian Zou
Keyword(s):  
Pairing Symmetry ◽  
Interstitial Impurity ◽  
S Wave ◽  
Iron Based Superconductors ◽  
Wave Pairing ◽  
Iron Based
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