scholarly journals Phase-Sensitive Evidence ford-Wave Pairing Symmetry in Electron-Doped Cuprate Superconductors

2000 ◽  
Vol 85 (1) ◽  
pp. 182-185 ◽  
Author(s):  
C. C. Tsuei ◽  
J. R. Kirtley
Keyword(s):  
Cuprate Superconductors ◽  
Pairing Symmetry ◽  
Wave Pairing ◽  
Phase Sensitive

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.

Fractional Quantized Vortices as Direct Evidence of dx2-y2-Wave Pairing Symmetry up to Critical Temperature in High-Tc Cuprate Superconductors

2002 ◽  
Vol 41 (Part 2, No. 7A) ◽  
pp. L739-L741 ◽  
Author(s):  
Akira Sugimoto ◽  
Takashi Miyake ◽  
Tomohiro Takeda ◽  
Ienari Iguchi ◽  
Satoshi Kashiwaya
Keyword(s):  
Critical Temperature ◽  
Cuprate Superconductors ◽  
Direct Evidence ◽  
Pairing Symmetry ◽  
Quantized Vortices ◽  
High Tc ◽  
Wave Pairing

Phase-sensitive evidence for a predominant d-wave pairing symmetry in the electron doped superconductor La2−xCexCuO4−y

2004 ◽  
Vol 408-410 ◽  
pp. 321-323
Author(s):  
Boris Chesca ◽  
K. Ehrhardt ◽  
M. Mößle ◽  
R. Straub ◽  
D. Koelle ◽  
...  
Keyword(s):  
Pairing Symmetry ◽  
Wave Pairing ◽  
Phase Sensitive ◽  
D Wave

scholarly journals d-wave pairing symmetry in cuprate superconductors

2000 ◽  
Vol 341-348 ◽  
pp. 1625-1628 ◽  
Author(s):  
C.C. Tsuei ◽  
J.R. Kirtley
Keyword(s):  
Cuprate Superconductors ◽  
Pairing Symmetry ◽  
Wave Pairing ◽  
D Wave
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