System for fast time-resolved measurements of c-axis quasiparticle conductivity in intrinsic Josephson junctions of Bi₂Sr₂CaCu₂O₈₊δ

Jonathan Fenton; Philip Thomas; Guang Yang; Colin Gough

doi:10.1063/1.1470261

System for fast time-resolved measurements of c-axis quasiparticle conductivity in intrinsic Josephson junctions of Bi₂Sr₂CaCu₂O₈₊δ

Jonathan Fenton, Philip Thomas, Guang Yang, Colin Gough

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Abstract

A wide-band cryogenic amplifier measurement system for time-resolved four-point current-voltage (I-V)-characteristic measurements on Bi2Sr2CaCu2O8+delta mesa structures is described. We present measurements which demonstrate the importance of self-heating on similar to50 ns time scales. Such heating is likely to have been very significant in many previously published measurements, where the reported nonlinear I-V characteristics have been used to derive superconducting energy gaps. (C) 2002 American Institute of Physics.

Original language	English
Pages (from-to)	2535-2537
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	14
DOIs	https://doi.org/10.1063/1.1470261
Publication status	Published - 1 Jan 2002

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abstract = "A wide-band cryogenic amplifier measurement system for time-resolved four-point current-voltage (I-V)-characteristic measurements on Bi2Sr2CaCu2O8+delta mesa structures is described. We present measurements which demonstrate the importance of self-heating on similar to50 ns time scales. Such heating is likely to have been very significant in many previously published measurements, where the reported nonlinear I-V characteristics have been used to derive superconducting energy gaps. (C) 2002 American Institute of Physics.",

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System for fast time-resolved measurements of c-axis quasiparticle conductivity in intrinsic Josephson junctions of Bi₂Sr₂CaCu₂O₈₊δ

Abstract

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