Andreev Reflection at the Normal-Metal / Heavy-Fermion Superconductor CeCoIn5 Interface by Point-Contact Spectroscopy

2006 ◽  
Author(s):  
Wan Kyu Park ◽  
Laura H. Greene ◽  
John L. Sarrao ◽  
Joe D. Thompson
Keyword(s):  
Heavy Fermion ◽  
Andreev Reflection ◽  
Point Contact ◽  
Normal Metal ◽  
Point Contact Spectroscopy ◽  
Heavy Fermion Superconductor

scholarly journals Point-contact spectroscopy of the heavy-fermion superconductor CePt3Si

2009 ◽  
Vol 21 (7) ◽  
pp. 075703 ◽  
Author(s):  
R Onuki ◽  
A Sumiyama ◽  
Y Oda ◽  
T Yasuda ◽  
R Settai ◽  
...  
Keyword(s):  
Heavy Fermion ◽  
Point Contact ◽  
Point Contact Spectroscopy ◽  
Heavy Fermion Superconductor

Point-contact spectroscopy on the heavy-fermion superconductor UPt3

1994 ◽  
Vol 199-200 ◽  
pp. 110-112 ◽  
Author(s):  
G. Goll ◽  
H.v. Löhneysen ◽  
I.K. Yanson ◽  
L. Taillefer
Keyword(s):  
Heavy Fermion ◽  
Point Contact ◽  
Point Contact Spectroscopy ◽  
Heavy Fermion Superconductor

scholarly journals POINT-CONTACT SPECTROSCOPY OF MAGNESIUM DIBORIDE WITH DIFFERENT COUNTER-ELECTRODES

2003 ◽  
Vol 17 (27n28) ◽  
pp. 1405-1416
Author(s):  
A. I. D'YACHENKO ◽  
V. YU. TARENKOV ◽  
M. A. BELOGOLOVSKII ◽  
V. N. VARYUKHIN ◽  
A. V. ABAL'OSHEV ◽  
...  
Keyword(s):  
Andreev Reflection ◽  
Magnesium Diboride ◽  
Three Dimensional ◽  
Point Contact ◽  
Band Model ◽  
Counter Electrodes ◽  
Break Junctions ◽  
Point Contact Spectroscopy ◽  
Dc Current ◽  
Two Band Model

We report on tunneling and Andreev-reflection conductance spectra of 39 K superconducting magnesium diboride, obtained with Pb and Au counter-electrodes. Two distinct steps at close to 2.7 and 7.1 meV appear in a low-resistance metallic-type Au–MgB 2 junction characteristic, whereas a tunneling-like spectrum measured for the same junction, annealed by the application of DC current, exhibits only a rounded contribution of the larger gap. Junctions with a superconducting lead counter-electrode pressed into a bulk MgB 2 sample reveal two conductance peaks that are interpreted as the result of the formation of a highly-transmitting break junctions inside the magnesium diboride ceramic. Our results strongly support the two-band model with two different gap values on quasi-two-dimensional σ (7.1 meV) and three-dimensional π (2.7 meV) Fermi surface sheets of MgB 2.

scholarly journals Point-Contact Spectroscopy of Heavy Fermion Compounds CeCu6 and CeAl3 in Magnetic Field

2015 ◽  
Vol 75 ◽  
pp. 296-302 ◽  
Author(s):  
G. Motoyama ◽  
S. Ogawa ◽  
K. Matsubayashi ◽  
K. Fujiwara ◽  
K. Miyoshi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heavy Fermion ◽  
Point Contact ◽  
Point Contact Spectroscopy
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