Point contact spectroscopy in oriented La2?x Sr x CuO4 superconductors; energy gap and Fermi velocity

1994 ◽  
Vol 7 (4) ◽  
pp. 763-766 ◽  
Author(s):  
Nir Hass ◽  
Guy Deutscher ◽  
A. Revcolevschi ◽  
G. Dhalenne
Keyword(s):  
Energy Gap ◽  
Point Contact ◽  
Fermi Velocity ◽  
Point Contact Spectroscopy

Sharp gap edge and determination of the fermi velocity in Y1Ba2Cu3O7?? by point contact spectroscopy

1992 ◽  
Vol 5 (2) ◽  
pp. 191-194 ◽  
Author(s):  
Nir Mass ◽  
D. Ilzycer ◽  
G. Deutscher ◽  
G. Desgardin ◽  
I. Monot ◽  
...  
Keyword(s):  
Point Contact ◽  
Fermi Velocity ◽  
Point Contact Spectroscopy

Energy gap of the high-TcsuperconductorHgBa2Ca2Cu3O8+δdetermined by point-contact spectroscopy

1994 ◽  
Vol 49 (21) ◽  
pp. 15416-15419 ◽  
Author(s):  
G. T. Jeong ◽  
J. I. Kye ◽  
S. H. Chun ◽  
Sergey Lee ◽  
S. I. Lee ◽  
...  
Keyword(s):  
Energy Gap ◽  
Point Contact ◽  
Point Contact Spectroscopy

scholarly journals Anisotropy of the superconducting energy gap in URu 2 Si 2 studied by point-contact spectroscopy

1996 ◽  
Vol 33 (7) ◽  
pp. 557-562 ◽  
Author(s):  
Yu. G Naidyuk ◽  
H. v Löhneysen ◽  
G Goll ◽  
I. K Yanson ◽  
A. A Menovsky
Keyword(s):  
Energy Gap ◽  
Point Contact ◽  
Point Contact Spectroscopy ◽  
Superconducting Energy Gap

POINT CONTACT SPECTROSCOPY IN ORIENTED YBa2Cu3O7−δ

1993 ◽  
Vol 07 (01n03) ◽  
pp. 127-130
Author(s):  
NIR HASS ◽  
D. ILZYCER ◽  
G. DEUTSCHER ◽  
G. DESGARDIN ◽  
I. MONOT ◽  
...  
Keyword(s):  
High Temperature Superconductors ◽  
Point Contact ◽  
Theoretical Explanation ◽  
Precise Determination ◽  
Fermi Velocity ◽  
Zero Bias ◽  
Point Contact Spectroscopy ◽  
Out Of Plane ◽  
Plane Direction

We report point contact spectroscopy measurements on YBa 2 Cu 3 O 7−δ thin films and textured bulk ceramics. The I(V) curves measured along the Copper-Oxygen (ab) plane direction are characteristic of the Andreev reflection phenomenon, with a sharp break at the gap edge. This allows a rather precise determination of the (in plane) gap, Δ = 20 mev . Subgap structure suggests the existence of a smaller gap for some orientations in the (ab) plane, of the order of 12 mev. The data also enabled us to set a lower bound to the inplane Fermi velocity in YBa 2 Cu 3 O 7−δ: v F ≥ 7 × 107 cm/sec . The value of v F has a crucial importance in the determination of the theoretical explanation for superconductivity in the High Temperature Superconductors. For out of plane measurements, only a weak zero bias anomaly is observed at energies up to 5 mev.

Superconducting energy gap of YB6 studied by point-contact spectroscopy

2007 ◽  
Vol 460-462 ◽  
pp. 626-627 ◽  
Author(s):  
Pavol Szabó ◽  
Jozef Kačmarčík ◽  
Peter Samuely ◽  
Ján Girovský ◽  
Slavomir Gabáni ◽  
...  
Keyword(s):  
Energy Gap ◽  
Point Contact ◽  
Point Contact Spectroscopy ◽  
Superconducting Energy Gap

scholarly journals Energy gap of intermediate-valentSmB6studied by point-contact spectroscopy

2001 ◽  
Vol 64 (8) ◽  
Author(s):  
K. Flachbart ◽  
K. Gloos ◽  
E. Konovalova ◽  
Y. Paderno ◽  
M. Reiffers ◽  
...  
Keyword(s):  
Energy Gap ◽  
Point Contact ◽  
Point Contact Spectroscopy

scholarly journals Point-contact spectroscopy of superconducting energy gap in DyNi2B2C

2000 ◽  
Vol 334 (1-2) ◽  
pp. 33-43 ◽  
Author(s):  
I.K Yanson ◽  
N.L Bobrov ◽  
C.V Tomy ◽  
D.McK Paul
Keyword(s):  
Energy Gap ◽  
Point Contact ◽  
Point Contact Spectroscopy ◽  
Superconducting Energy Gap
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