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 - Mesoscopic superconducting analogs of the Aharonov-Bohm-Casher Effect
AU - Leadbeater, M
AU - Lambert, Colin
PY - 1995
Y1 - 1995
N2 - We predict a new quantum interference effect for phase coherent loops containing a superconducting arm, in which the energy gap (superconducting phase gradient) plays the role of a scalar (vector) potential. By solving the Bogoliubov–de Gennes equation for small loops in one and two dimensions, it is demonstrated that if either the magnitude or the phase gradient of the superconducting order parameter is increased monotonically, the differential conductance oscillates. The frequency of oscillation is a factor of two lower than that of Tomasch oscillations and therefore defines a first harmonic for quasi-particle interference phenomena in mesoscopic superconductors.
AB - We predict a new quantum interference effect for phase coherent loops containing a superconducting arm, in which the energy gap (superconducting phase gradient) plays the role of a scalar (vector) potential. By solving the Bogoliubov–de Gennes equation for small loops in one and two dimensions, it is demonstrated that if either the magnitude or the phase gradient of the superconducting order parameter is increased monotonically, the differential conductance oscillates. The frequency of oscillation is a factor of two lower than that of Tomasch oscillations and therefore defines a first harmonic for quasi-particle interference phenomena in mesoscopic superconductors.
U2 - 10.1103/PhysRevLett.74.4519
DO - 10.1103/PhysRevLett.74.4519
M3 - Journal article
VL - 74
SP - 4519
EP - 4522
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 22
ER -