%% Figure 5c
Isd1: Current through junction in A, sweeping from 0 to positive current.
Isd2: Current through junction in A, sweeping from positive to negative current.
Isd3: Current through junction in A, sweeping from negative to 0 current.
Vsd1: Voltage across junction in V, sweeping from 0 to positive current.
Vsd2: Voltage across junction in V, sweeping from positive to negative current.
Vsd3: Voltage across junction in V, sweeping from negative to 0 current.

An linear drift in Vsd due to the measurement electronics was subtracted.

%% Figure 5d
Isd: Current through junction in A, sweeping from negative to positive current.
Vsd: Voltage across junction in V, sweeping from negative to positive current.
dU: Lock-in voltage across junction in V.

Device resistance can be obtained by dividing dU by excitation current dI = 300 pA.