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 - Dynamical properties of weakly linked, mesoscopic, superconducting dots
AU - Cook, P. M. A.
AU - Martin, Andrew
AU - Lambert, Colin
PY - 1994/9/12
Y1 - 1994/9/12
N2 - We compute the current-voltage (I-V) characteristic of a mesoscopic Josephson junction, formed from two weakly linked, superconducting dots. A key feature of such structures is the presence of quasi-particle resonances in the current-phase relation. We show that these lead to measurable changes in the I-V characteristic compared with conventional macroscopic junctions. For an overdamped junction, the I-V characteristic is predicted to shift to higher values of the current, but the critical current is unchanged. For an underdamped junction exhibiting hysteresis, this shift is accompanied by an increase in the critical current associated with the lower branch of the I-V curve.
AB - We compute the current-voltage (I-V) characteristic of a mesoscopic Josephson junction, formed from two weakly linked, superconducting dots. A key feature of such structures is the presence of quasi-particle resonances in the current-phase relation. We show that these lead to measurable changes in the I-V characteristic compared with conventional macroscopic junctions. For an overdamped junction, the I-V characteristic is predicted to shift to higher values of the current, but the critical current is unchanged. For an underdamped junction exhibiting hysteresis, this shift is accompanied by an increase in the critical current associated with the lower branch of the I-V curve.
U2 - 10.1088/0953-8984/6/37/009
DO - 10.1088/0953-8984/6/37/009
M3 - Journal article
VL - 6
SP - 7547
EP - 7552
JO - Journal of Physics: Condensed Matter
JF - Journal of Physics: Condensed Matter
SN - 0953-8984
IS - 37
ER -