Abstract
We report detailed magnetic measurements in H parallel to the c-axis direction on a single crystal of Nd1.85Ce0.15Cu2O4-y. The magnetization data indicate that the entrance field is determined by surface barriers. At low temperatures, the penetration field Hp(T) can be fit with Hp=Hcexp(-T/T0); at temperature close to Tc, Hp(T) is linear in T. The date can be qualitatively understood by a model where two-dimensional point vortices are thermally nucleated near the surface in weakly coupled layered superconductors.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 12326-12329 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 49 |
| Issue number | 17 |
| DOIs | |
| State | Published - Jan 1 1994 |
ASJC Scopus subject areas
- Condensed Matter Physics
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Zuo, F., Khizroev, S., Jiang, X., Peng, J. L., & Greene, R. L. (1994). Evidence of thermal nucleation of two-dimensional point vortices in single-crystal Nd1.85Ce0.15Cu2O4-y superconductors. Physical Review B, 49(17), 12326-12329. https://doi.org/10.1103/PhysRevB.49.12326