Phase slips in mesoscopic superconducting triangles

✍ Scribed by N. Schildermans; R. Salenbien; A.V. Silhanek; V.V. Moshchalkov

• Book ID: 104083643
• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 416 KB
• Volume: 468
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2007.11.067

✦ Synopsis

Voltage-current (V(I)) characteristics are investigated in the superconducting state of an equilateral triangle of 2.2 lm 2 area. Several steps in the V(I) curves indicate the presence of phase slip centers in the triangle. The field dependence of these steps follows the Little-Parks oscillations of the phase boundary, associated with the change of vorticity. The influence of the contacts manifests itself as an excess voltage and a negative differential resistance. In addition we show that the position of the current contacts modify the superconducting phase boundary measurements.