Data of normalized current-voltage characteristics of an overdamped Josephson junction driven by both dc and ac components under various bias and junction parameters

The TXT  files in the IV_SIN_Beta_0.00-Njj_1.zip zipped folder include the simulated IV characteristics in normalized units for an overdamped Josephson junction, as described by the RSJ model. This simulation is performed in Python and considers various bias currents and junction parameters.

The junction is biased by both a dc current and an ac (rf) current at a normalized frequency Ω_rf and rf-current amplitude i_rf.

Ω_rf ranges from 0.2 to 2 in steps of 0.05.i_rf ranges from 0 to 4 in steps of 0.1.The dc current varies from 0 to 6 in steps of 0.015.

In addition to normalized current and voltage, fundamental to determine the width and position of rf-induced Shapiro steps, other relevant parameters (supercurrent and total dissipated power) are also calculated.

The filename is organized as follows (example):

IV_SIN__Beta_0.00-Omega_rf_2.000-I_rf_4.000-N_jj_1.txt

IV: Indicates that the IV characteristic can be extracted from this data (first two columns)

SIN: Specifies that the rf current bias is sinusoidal.

Beta_0.00: Indicates that the Stewart-McCumber parameter (β) of the junction is 0, meaning that the junction is overdamped.

Omega_rf_2.000: Indicates that the normalized rf frequency is 2.

I_rf_4.000: Indicates that the normalized rf current is 4.

N_jj_1: Indicates that a single Josephson junction is simulated.

Each data file consists of four columns and 400 rows (excluding the header). The columns respectively represent Current, Voltage, Supercurrent, and Power, all expressed in normalized units.