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用隧道注入准粒子,使超导铅膜进入非平衡状态,在同样水平的注入条件下,可能出现两种与历史有关的非平衡零电阻状态,本文用的Pb-Pb-Pb双重隧道结构,探测这两种非平衡态的性质,发现一种是均匀的非平衡态,另一种是N-S分区的非均匀非平衡状态。Superconducting lead film is driven into the non-equilibrium state by tunnel injection of quasi-particles. There are two kinds of zero resistance state under the same injection level, depending upon the sample history. With the help of double tunnel injection, we found one of them is in the homogeneous non-equilibrium superconducting state and the other in the N-S inhomogeneous one.
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