Title

Neutron-irradiation Effects on the V-I Characteristics of YBa2Cu3O7-δ Twinned Crystals:Linking Transport Results in a Variety of Copper Oxide Superconductors

Authors

Brandon R. Brown, University of San FranciscoFollow

Document Type

Article

Publication Date

4-1-1997

Abstract

We have investigated the depinning process of magnetic flux vortices in twinned crystals of YBa₂Cu₃O_7-δ in intermediate applied magnetic fields parallel to the crystallographic c axis through precise resistivity measurements before and after fast-neutron irradiation. Of particular interest for each field is the power-law dependence of the electric field on current density, E∝Jⁿ, at a well defined temperature which separates a nonlinear region below from a more linear, dissipative region above. We find that n shows a striking dependence on the estimated value of the Larkin-Ovchinnikov length. The relation is not only manifest before and after irradiation but also for a variety of samples, including films, crystals, and at least two copper oxides other than YBa₂Cu₃O_7-δ.

Comments

Article published in Physical Review B, 55, pp R8713-R8716 (1997).

© 1997 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.55.R8713

DOI: 10.1103/PhysRevB.55.R8713

Recommended Citation

Brown, Brandon R., "Neutron-irradiation Effects on the V-I Characteristics of YBa2Cu3O7-δ Twinned Crystals:Linking Transport Results in a Variety of Copper Oxide Superconductors" (1997). Physics and Astronomy. 22.
https://repository.usfca.edu/phys/22