scholarly journals Origin of the hysteresis of the current voltage characteristics of superconducting microbridges near the critical temperature

2011 ◽  
Vol 84 (9) ◽  
Author(s):  
D. Yu. Vodolazov ◽  
F. M. Peeters
Keyword(s):  
Critical Temperature ◽  
Current Voltage ◽  
Current Voltage Characteristics

POSSIBLE OBSERVATION OF TUNNELING CURRENTS IN NdBaCuO SUPERCONDUCTING THIN FILMS

2003 ◽  
Vol 17 (04n06) ◽  
pp. 905-909
Author(s):  
A. NIGRO ◽  
P. ROMANO ◽  
B. SAVO
Keyword(s):  
Thin Films ◽  
Critical Temperature ◽  
Tunneling Current ◽  
Superconducting Thin Films ◽  
Quasiparticle Tunneling ◽  
Current Voltage ◽  
Oriented Films ◽  
Normal Resistance ◽  
Current Voltage Characteristics ◽  
Tunneling Behavior

Phenomena resembling a tunneling behavior have been observed on dc sputtered Nd1+xBa2-xu3Oy c-axis oriented films. The current voltage characteristics at 4.2K give evidence of quasiparticle tunneling current as usually measured in superconductor-insulator-normal metal or superconductor-insulator-superconductor junctions, with normal resistance values of about 10Ω. In the conductance curves, peak at about +/-16mV are clearly visible. An analysis of these features is presented up to temperatures close to the sample critical temperature.

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