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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Fleshler, S. Kwok, W.K. Welp, U. Downey, J. Crabtree, G.W. |
| Copyright Year | 2002 |
| Abstract | The angular dependence of the magnetoresistance was measured on the same single crystal of YBa/sub 2/Cu/sub 3/O/sub 7- delta / prepared initially with a superconducting transition temperature of 93 K and then annealed to obtain a transition temperature of 56.9 K. A second oxygen deficient sample was produced with a transition temperature of 57.0 K and nearly identical transport characteristics. Twin boundary pinning superimposed on flux flow behavior was observed in both the 56.9 K and 93.0 K states for magnetic field rotation in the ab plane. For magnetic field rotations off the c-axis, twin boundary pinning is observed only for the nearly stoichiometric state. The broadening of the resistive transition in magnetic field (H//c) is observed to occur over a much larger interval of reduced temperature in the deoxygenated state. The enhanced broadening of the resistive transition in magnetic field and absence of twin boundary pinning may indicate that the vortex system is two-dimensional, and, in general, defects are rendered ineffective in pinning due to the absence of three-dimensional collective elastic effects.< |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 1483 |
| Ending Page | 1486 |
| Page Count | 4 |
| File Size | 505678 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 3 |
| Issue Number | 1 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1993-03-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Oxygen Anisotropic magnetoresistance Superconducting transition temperature Magnetic fields Crystals High temperature superconductors Materials science and technology Magnetic anisotropy Perpendicular magnetic anisotropy Superconducting magnets |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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