Abstract
The effects of charge-carrier density modulation on critical currents and vortex dynamics in ultrathin YBa2Cu3O7-δ films were investigated through transport measurements in field-effect devices. Two distinct dissipation regions in resistive transitions in applied magnetic fields are identified by the electric-field effect. A Kosterlitz-Thouless-like transition is observed in zero magnetic field, which can be tuned by the electric field. The importance of thermal fluctuations for the dissipation in high-Tc superconductors is stressed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2709-2712 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 69 |
| Issue number | 18 |
| DOIs | |
| State | Published - 1992 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
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