"P(GCP204/11/J042)" . "environment; electromagnetic; with; junctions; tunnel; superconducting; noise; voltage; Asymmetric"@en . . . . . . . . "T151" . "[79C49825303C]" . "Novotn\u00FD, Tom\u00E1\u0161" . "\u017Donda, Martin" . . . . . "Asymmetric voltage noise in superconducting tunnel junctions with the electromagnetic environment" . "Asymmetric voltage noise in superconducting tunnel junctions with the electromagnetic environment" . . "5"^^ . "http://dx.doi.org/10.1088/0031-8949/2012/T151/014023" . "Asymmetric voltage noise in superconducting tunnel junctions with the electromagnetic environment"@en . . "We investigate theoretically the V-I characteristics and voltage noise of superconducting tunnel junctions with a small critical current via the matrix-continued-fraction method. Special attention is paid to the large hysteresis in the V-I characteristics and to the voltage-noise anomaly observed in preliminary experiments. The current dependence of the voltage noise shows a strong asymmetry between the forward and the backward current ramping and a discontinuous change in the noise close to its measured maximum occurring at the switching current. We show that both the large hysteresis and the voltage noise anomaly in this current-biased setup are a consequence of the influence of the junction's electromagnetic environment. Typically, the voltage-noise dependence on the junction current parametrized by the external drive contains a loop that is, however, not observed experimentally because of the implementation of the junction-current ramp. Skipping a part of the loop is responsible for the observed hysteresis as well as the noise anomaly."@en . "0031-8949" . "Asymmetric voltage noise in superconducting tunnel junctions with the electromagnetic environment"@en . . "We investigate theoretically the V-I characteristics and voltage noise of superconducting tunnel junctions with a small critical current via the matrix-continued-fraction method. Special attention is paid to the large hysteresis in the V-I characteristics and to the voltage-noise anomaly observed in preliminary experiments. The current dependence of the voltage noise shows a strong asymmetry between the forward and the backward current ramping and a discontinuous change in the noise close to its measured maximum occurring at the switching current. We show that both the large hysteresis and the voltage noise anomaly in this current-biased setup are a consequence of the influence of the junction's electromagnetic environment. Typically, the voltage-noise dependence on the junction current parametrized by the external drive contains a loop that is, however, not observed experimentally because of the implementation of the junction-current ramp. Skipping a part of the loop is responsible for the observed hysteresis as well as the noise anomaly." . . . "Physica Scripta" . "000311961700024" . . . "RIV/00216208:11320/12:10127480!RIV13-GA0-11320___" . "11320" . . . "2"^^ . "10.1088/0031-8949/2012/T151/014023" . "2"^^ . "123958" . "RIV/00216208:11320/12:10127480" . "SE - \u0160v\u00E9dsk\u00E9 kr\u00E1lovstv\u00ED" . . "listopad" . . .