Anomalous anisotropic current-voltage characteristics and magnetic resistance of single crystals YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7- delta </sub>
M A Obolenskii; A V Bondarenko; A M Kadygrobov; O A Mironov; S V Chistyakov; I Yu Skrylev; Yu T Petrusenko; M A Obolenskii; Kharkov State Univ., Ukrainian SSR, USSR; A V Bondarenko; Kharkov State Univ., Ukrainian SSR, USSR; A M Kadygrobov; Kharkov State Univ., Ukrainian SSR, USSR; O A Mironov; Kharkov State Univ., Ukrainian SSR, USSR; S V Chistyakov; Kharkov State Univ., Ukrainian SSR, USSR; I Yu Skrylev; Kharkov State Univ., Ukrainian SSR, USSR; Yu T Petrusenko; Kharkov State Univ., Ukrainian SSR, USSR
Журнал:
Superconductor Science and Technology
Дата:
1991-01-01
Аннотация:
The anomalous anisotropic current-voltage characteristics (CVC) and magnetic resistance in the temperature range Delta T=1-1.5 K above T<sub>C</sub>=91.5 K in a single crystal. YBa<sub>2</sub>Cu<sub>2</sub>O<sub>7- delta </sub> were studied. The observed S-shape CVC and the resistivity increasing can be explained by repeated Andreev reflection at S-N boundary and reflection at twin contact.
135.7Кб