Tunneling Conductance and Magnetoresistance in Ferromagnet/Ferromagnet/ d -Wave Superconductor Double Tunnel Junctions

2004 ◽  
Vol 41 (1) ◽  
pp. 135-140
Author(s):  
Dong Zheng-Chao
Keyword(s):  
Tunnel Junctions ◽  
Tunneling Conductance ◽  
D Wave

Differential Conductance for Tunnel Junctions: Effects of d-Wave Gap

1997 ◽  
Vol 11 (29) ◽  
pp. 1285-1294 ◽  
Author(s):  
Biplab Chattopadhyay ◽  
Joydev Lahiri ◽  
A. N. Das
Keyword(s):  
Density Of States ◽  
Tunnel Junctions ◽  
Particle Density ◽  
Differential Conductance ◽  
Tunneling Conductance ◽  
Van Hove Singularity ◽  
Single Particle Density ◽  
Conductance Data ◽  
Quasiparticle Density ◽  
D Wave

Tunneling conductance for N-I-S and S-I-S tunnel junctions are calculated within the framework of an extended van-Hove singularity in the single particle density of states of the superconducting electrode. Results from our calculations are compared with the conductance data of N-I-S and S-I-S junctions consisting of high-T c superconductors. Possible interpretation of the photoemission intensity curves, in terms of the quasiparticle density of states, is considered and predictions are made for conductance including a d-wave pseudogap in the quasiparticle dispersion.

d-Wave Tunnel Junctions

1999 ◽  
Vol 13 (09n10) ◽  
pp. 1295-1299
Author(s):  
A. M. Cucolo ◽  
M. Cuoco ◽  
C. Noce
Keyword(s):  
Weak Coupling ◽  
Tunnel Junctions ◽  
Coupling Model ◽  
Normal Metal ◽  
Tunneling Conductance ◽  
Spin States ◽  
S Wave ◽  
Zero Bias ◽  
Zero Bias Conductance ◽  
D Wave

We study the tunneling spectra for superconductor-insulator-normal metal (S-I-N) tunnel junctions with an s -wave or a d -wave superconductor within the weak-coupling model. We deduce the temperature behavior of tunneling conductance and their peak positions as well as of the zero-bias conductance. The results obtained allow us to discriminate among the two singlet spin states.

Power Law Behavior of the Zero Bias Tunneling Conductance: the New Evidence for d -Wave Symmetry

2000 ◽  
Vol 17 (10) ◽  
pp. 760-761 ◽  
Author(s):  
Li Shao-Xiong ◽  
Tao Hong-Jie ◽  
Xuan Yi ◽  
Zhao Bai-Ru ◽  
Zhao Zhong-Xian
Keyword(s):  
Power Law ◽  
Tunneling Conductance ◽  
Zero Bias ◽  
Wave Symmetry ◽  
New Evidence ◽  
D Wave

Influence of zero-energy state on tunneling magnetoresistance in ferromagnet/d-wave superconductor/ferromagnet tunnel junctions

2001 ◽  
Vol 352 (1-4) ◽  
pp. 203-206
Author(s):  
Nobukatsu Yoshida ◽  
Yukio Tanaka ◽  
Jun-ichiro Inoue ◽  
Satoshi Kashiwaya
Keyword(s):  
Tunnel Junctions ◽  
Energy State ◽  
Tunneling Magnetoresistance ◽  
Zero Energy ◽  
D Wave

Tunnel Junctions on Chemically Etched YBa2Cu3O7 Thin Films

1989 ◽  
Vol 169 ◽  
Author(s):  
Julia M. Phillips ◽  
J. M. Valles ◽  
A. M. Cucolo ◽  
R. C. Dynes ◽  
M. Gurvitch ◽  
...  
Keyword(s):  
Thin Films ◽  
Single Crystals ◽  
Voltage Dependence ◽  
Tunnel Junctions ◽  
Tunneling Conductance ◽  
Ybco Films ◽  
Low Leakage

AbstractWe have prepared low leakage tunnel junctions on epitaxial YBa2Cu3O7 (YBCO) films grown on SrTiO3(001) by evaporating Pb counterelectrodes onto chemically etched YBCO surfaces. Structure in the voltage dependence of the tunneling conductance is reproducible and strongly resembles what has been obtained in similarly etched junctions on YBCO single crystals.

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