scholarly journals Role of critical current on the point-contact Andreev reflection spectra between a normal metal and a superconductor

2004 ◽  
Vol 69 (13) ◽  
Author(s):  
Goutam Sheet ◽  
S. Mukhopadhyay ◽  
P. Raychaudhuri
Keyword(s):  
Critical Current ◽  
Andreev Reflection ◽  
Point Contact ◽  
Normal Metal ◽  
Reflection Spectra

scholarly journals Andreev bound states in superconductor/ferromagnet point contact Andreev reflection spectra

2017 ◽  
Vol 95 (9) ◽  
Author(s):  
K. A. Yates ◽  
L. A. B. Olde Olthof ◽  
M. E. Vickers ◽  
D. Prabhakaran ◽  
M. Egilmez ◽  
...  
Keyword(s):  
Bound States ◽  
Andreev Reflection ◽  
Point Contact ◽  
Reflection Spectra ◽  
Andreev Bound States

Two-gap superconductivity in the Fe-1111 superconductor LaFeAsO1−x Fx: A point-contact Andreev-reflection study

Open Physics ◽  
2009 ◽  
Vol 7 (2) ◽  
Author(s):  
Renato Gonnelli ◽  
Mauro Tortello ◽  
Dario Daghero ◽  
Giovanni Ummarino ◽  
Valeri Stepanov ◽  
...  
Keyword(s):  
Low Temperature ◽  
Theoretical Analysis ◽  
Temperature Dependence ◽  
Andreev Reflection ◽  
Point Contact ◽  
Layered Superconductor ◽  
Reflection Spectra ◽  
Eliashberg Theory ◽  
Boson Coupling ◽  
The Rich

AbstractPoint-contact Andreev-reflection (PCAR) experiments were performed in the Fe-1111 layered superconductor LaFeAsO0.9F0.1 with resistive T con ∼ 27 K. The observation of two pairs of peaks in the low-temperature Andreev-reflection spectra clearly indicates the presence of two order parameters. The behavior of the two gaps as a function of temperature, obtained by fitting the conductance curves by means of the generalized two-band Blonder-Tinkham-Klapwijk model, shows some anomalies. A theoretical analysis performed within the two-band Eliashberg theory with a generic electron-boson coupling can reproduce the low-temperature value of the two gaps but generally fails in giving a satisfactory fit of their overall temperature dependence, indicating the rich and complex physics of these newly discovered superconductors.

scholarly journals Effect of Transport-Induced Charge Inhomogeneity on Point-Contact Andreev Reflection Spectra at Ferromagnet–Superconductor Interfaces

2012 ◽  
Vol 81 (8) ◽  
pp. 084704 ◽  
Author(s):  
Ya-Fen Hsu ◽  
Tien-Wei Chiang ◽  
Guang-Yu Guo ◽  
Shang-Fan Lee ◽  
Jun-Jih Liang
Keyword(s):  
Andreev Reflection ◽  
Point Contact ◽  
Reflection Spectra ◽  
Induced Charge

scholarly journals Analysis of point-contact Andreev reflection spectra in spin polarization measurements

2004 ◽  
Vol 70 (5) ◽  
Author(s):  
G. T. Woods ◽  
R. J. Soulen ◽  
I. Mazin ◽  
B. Nadgorny ◽  
M. S. Osofsky ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Andreev Reflection ◽  
Point Contact ◽  
Reflection Spectra ◽  
Polarization Measurements

Conductance features in point contact Andreev reflection spectra

2009 ◽  
Vol 21 (9) ◽  
pp. 095701 ◽  
Author(s):  
V Baltz ◽  
A D Naylor ◽  
K M Seemann ◽  
W Elder ◽  
S Sheen ◽  
...  
Keyword(s):  
Andreev Reflection ◽  
Point Contact ◽  
Reflection Spectra

Point-contact Andreev-reflection spectroscopy in MgB2: The role of substitutions

2007 ◽  
Vol 456 (1-2) ◽  
pp. 134-143 ◽  
Author(s):  
R.S. Gonnelli ◽  
D. Daghero ◽  
G.A. Ummarino ◽  
M. Tortello ◽  
D. Delaude ◽  
...  
Keyword(s):  
Andreev Reflection ◽  
Point Contact ◽  
Reflection Spectroscopy
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