Resistance Anomaly and Excess Voltage near Superconducting Interfaces

M. Park; M. S. Isaacson; J. M. Parpia

doi:10.1103/PhysRevLett.75.3740

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Resistance Anomaly and Excess Voltage near Superconducting Interfaces

M. Park, M. S. Isaacson, J. M. Parpia

DOI 10.1103/PhysRevLett.75.3740 · Physical Review Letters

T1

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Abstract

We present resistance and current-voltage characteristics of an aluminum film with two regions of different superconducting transition temperatures. The voltage and hence resistance increase above normal state values near the transition. The excess voltage disappears with increasing bias current, accompanied by negative differential resistances. This behavior is associated with the charge imbalance that accompanies normal-superconducting interfaces and phase slip centers.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.407	Pressure not reported	unknown
Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.452	Pressure not reported	unknown