The Charging Effect in High-T sub c Superconducting Thin Films
Abstract
Experimental research has been conducted to elucidate the basic physics and possible applications of the charging effect in partially oxygen- depleted YBa(2)Cu(3)O(6+x) (YBCO) thin films. A novel laser-writing technique, suitable for patterning and fabrication of monolithic YBCO electronic devices has been developed. The technique allows to define superconducting and insulating regions in the same sample and is based on local laser beam heating of the epitaxial YBCO film in either the presence or the absence of an oxygen atmosphere. Several test structures for our charging-effect experiments have been fabricated using laser writing. The structures are fully monolithic with a partially oxygen-depleted channel and oxygen-rich source and drain electrodes. The devices were tested and showed a substantial charging effect, which we associate with the charge-transfer effects related to electric-field-enhanced changes of the crystalline order in oxygen-deficient YBCO. We have also fabricated and successfully tested laser-written YBCO microwave transmission structures and resonators. The developed devices represent a new approach for the high-temperature superconducting electronics, which consists of exploiting contrasting properties of the oxygen-poor and oxygen-rich YBCO phases to design novel devices. Superconducting electronics, High temperature superconductivity, Charging effect, Laser-writing technique, Superconducting three-terminal devices.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1994
- Accession Number
- ADA277265
Entities
People
- Roman Sobolewski
Organizations
- University of Rochester