Magnetic field dependence of the basal-plane superconducting anisotropy in YBa2Cu4O8 from small-angle neutron scattering measurements of the vortex lattice
Jonathan S. White, Charlotte J. Bowell, Alistair S. Cameron, Richard W. Heslop, Joël Mesot, Jorge L. Gavilano, Simon Strässle, Lars Mächler, Rustem Khasanov, Charles D. Dewhurst, Janusz Karpinski, Edward M. Forgan
DOI 10.1103/PhysRevB.89.024501 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We report a study of the basal-plane anisotropy of the superfluid density in underdoped YBa2Cu4O8 (Y124), showing the effects of both the CuO2 planes and the fully occupied CuO chains. From small-angle neutron scattering measurements of the vortex lattice, we can infer the superconducting (SC) properties for a temperature (T) range T = 1.5 K to Tc and magnetic induction B from 0.1 to 6 T. We find that the superfluid density along a has a simple d-wave T dependence. However, along b (the chain direction) the superfluid density falls much more rapidly with T and also with increasing field. This strongly suggests the suppression of proximity-effect-induced superconductivity in the CuO chains. In addition, our results do not support a common framework for the low-field in-plane SC response in Y124 and related YBa2Cu3O7, and also indicate that any magnetic field induced charge-density-wave order in Y124 exists only for fields above 6 T.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 79.9 | Pressure not reported | onset |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Field structure of vortex lattices in uniaxial superconductors
similarity 0.97Sara L. Thiemann et al.
Source status unknown — claims are unverified
Instability of a tilted vortex line in magnetically coupled layered superconductors
similarity 0.97M. Benkraouda & John R. Clem
Source status unknown — claims are unverified
Antiferromagnetic spin-fluctuation effects on quasiparticle damping and superconductivity in high-Tc materials
similarity 0.97S. Wermbter & L. Tewordt
Source status unknown — claims are unverified
Columnar defects and vortex fluctuations in layered superconductors
similarity 0.97A. E. Koshelev et al.
Source status unknown — claims are unverified
New Magnetic Coherence Effect in Superconducting La2−xSrxCuO4
similarity 0.96T. E. Mason et al.
Source status unknown — claims are unverified
Vortex state of a d-wave superconductor in high-Tc cuprates
similarity 0.96Hyekyung Won & Kazumi Maki
Source status unknown — claims are unverified