Quasiparticle tunnelling in YBa2Cu3O7/CeO2YBa2Cu3O7 ramp-type junctions

✍ Scribed by Th. Becherer; M. Kunz; C. Stölzel; H. Adrian

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 154 KB
• Volume: 235-240
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)92164-4

✦ Synopsis

We present results of quasiparticle tunnelling experiments on YBa2CuaO7 / CeO2/YBa2CuaO7 ramptype junctions. To account for the influence of the V-shaped background conductance, that is seen m most junctions, a simple method is developed that is capable of describing the background with hardly any deviation. After correction of the background pronounced maxima can be observed at about -I-25 mV Although the peak position does not change much with increasing temperature, an analysis using the Dynes equation yields a decreasing gap value and an increasing broadening above 15-20 K.