SUBNANOSECOND PAIR‐TUNNELING TO SINGLE‐PARTICLE TUNNELING TRANSITIONS IN JOSEPHSON JUNCTIONS

1966 ◽  
Vol 9 (4) ◽  
pp. 167-168 ◽  
Author(s):  
J. Matisoo
Keyword(s):  
Single Particle ◽  
Josephson Junctions ◽  
Pair Tunneling

SPIN DEPENDENCE OF PAIR TUNNELING PROPERTIES OF Bi2Sr2CaCu2O8+x INTRINSIC JOSEPHSON JUNCTIONS

2005 ◽  
Vol 19 (01n03) ◽  
pp. 199-203 ◽  
Author(s):  
DO BANG ◽  
HU-JONG LEE ◽  
MYUNG-HO BAE ◽  
WANG-HYUN PARK
Keyword(s):  
External Field ◽  
Single Crystal ◽  
Josephson Junctions ◽  
Phase Fluctuation ◽  
Superconducting Gap ◽  
Spin Dependence ◽  
Intrinsic Josephson Junctions ◽  
Pair Tunneling ◽  
Spin Polarized ◽  
Pancake Vortices

Detailed tunneling characteristics of a stack of intrinsic Josephson junctions in a Bi 2 Sr 2 CaCu 2 O 8+x single crystal were obtained both in spin-degenerate and spin-polarized bias configurations. Injection of the spin-polarized quasiparticles effectively weakened the in-plane superconducting strength and the interlayer Jospehson coupling. The superconducting gap and the Josephson critical current of the stack were, in general, further suppressed by an external field applied in parallel with the c-axis direction. Study of the spin-dependent tunneling characteristics may provide valuable information on clarifying the mechanism of high-Tc superconductivity as well as the interlayer phase fluctuation induced by the "pancake vortices" on CuO 2 layers.

Soft-photon emission from electron-pair tunneling in small Josephson junctions

1982 ◽  
Vol 26 (3) ◽  
pp. 1475-1476 ◽  
Author(s):  
A. Widom ◽  
G. Pancheri ◽  
Y. Srivastava ◽  
G. Megaloudis ◽  
T. D. Clark ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Electron Pair ◽  
Photon Emission ◽  
Soft Photon ◽  
Pair Tunneling

scholarly journals EFFECT OF SINGLE PARTICLE HOPPING AND OUT OF PLANE MAGNETIC IMPURITY ON COUPLED PLANAR SUPERCONDUCTORS

1995 ◽  
Vol 09 (11n12) ◽  
pp. 737-745 ◽  
Author(s):  
MANAS SARDAR ◽  
DEBANAND SA
Keyword(s):  
Single Particle ◽  
Magnetic Impurity ◽  
Sharp Decrease ◽  
Tunneling Mechanism ◽  
Pair Tunneling ◽  
Out Of Plane ◽  
Anisotropic Systems

It is shown that the single particle band motion along the c axis is harmful for superconductivity in anisotropic systems. Variation of T c with c axis hopping parameter is shown for both the conventional Josephson coupled, planar superconductors and for interlayer pair tunneling mechanism of Wheatley, Hsu, and Anderson (WHA). Effect of out-of-plane magnetic impurity substitution is shown to suppress T c more for conventional superconductors whereas there is a very sharp decrease of T c in the WHA mechanism at larger concentrations.

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