TY - JOUR
T1 - Sample size dependence of excess resistance near critical field in mesoscopic superconducting Al disk
AU - Harada, A.
AU - Enomoto, K.
AU - Yakabe, T.
AU - Kimata, M.
AU - Hazama, K.
AU - Satsukawa, H.
AU - Terashima, T.
AU - Uji, S.
PY - 2009
Y1 - 2009
N2 - We report the size dependence of superconducting transition in mesoscopic Al disks with 1.0, 0.7, and 0.4μ m in diameter performed by resistance measurements under magnetic field. All the samples show excess resistance peaks near Hc2, which are 3 ∼ 6 times larger than normal state resistance Rn, whereas there are no resistance peaks at H 0. We find that the resistance peak rapidly increases and becomes the largest at the magnetic field just below the transition of vorticity L : 0 → 1 with no relation to the sample size. The resistance peak, which shows the presence of large energy dissipation, would be caused by characteristic vortex dynamics confined in the small geometries.
AB - We report the size dependence of superconducting transition in mesoscopic Al disks with 1.0, 0.7, and 0.4μ m in diameter performed by resistance measurements under magnetic field. All the samples show excess resistance peaks near Hc2, which are 3 ∼ 6 times larger than normal state resistance Rn, whereas there are no resistance peaks at H 0. We find that the resistance peak rapidly increases and becomes the largest at the magnetic field just below the transition of vorticity L : 0 → 1 with no relation to the sample size. The resistance peak, which shows the presence of large energy dissipation, would be caused by characteristic vortex dynamics confined in the small geometries.
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U2 - 10.1088/1742-6596/150/2/022022
DO - 10.1088/1742-6596/150/2/022022
M3 - Article
AN - SCOPUS:77952468690
VL - 150
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 2
M1 - 022022
ER -