Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Giant conductance oscillations in superconducting phase gradiometers
AU - Cook, P M A
AU - Hui, V C
AU - Lambert, Colin
PY - 1995
Y1 - 1995
N2 - A new class of superconductivity-enhanced, quasi-particle interference effects (SEQUINs) is suggested, based on interference from the order parameter phase gradient of a single superconductor (S) in contact with a normal metallic lead (N) of finite width M. By solving the Bogoliubov-de Gennes equation in two dimensions, it is predicted that the electrical conductance will oscillate as the phase gradient v at 90 degrees to the interface is increased, with period ($) over bar v = 2 pi/M. This effect is enhanced by the presence of a Schottky barrier at the interface and is also present in N-S-N structures. The size of the effect scales with the number of open channels and can be much greater than e(2)/h.
AB - A new class of superconductivity-enhanced, quasi-particle interference effects (SEQUINs) is suggested, based on interference from the order parameter phase gradient of a single superconductor (S) in contact with a normal metallic lead (N) of finite width M. By solving the Bogoliubov-de Gennes equation in two dimensions, it is predicted that the electrical conductance will oscillate as the phase gradient v at 90 degrees to the interface is increased, with period ($) over bar v = 2 pi/M. This effect is enhanced by the presence of a Schottky barrier at the interface and is also present in N-S-N structures. The size of the effect scales with the number of open channels and can be much greater than e(2)/h.
U2 - 10.1209/0295-5075/30/6/007
DO - 10.1209/0295-5075/30/6/007
M3 - Journal article
VL - 30
SP - 355
EP - 360
JO - EPL
JF - EPL
SN - 0295-5075
IS - 6
ER -