Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1814148 | Physica B: Condensed Matter | 2007 | 5 Pages |
Abstract
We have investigated flux lines in low- and high-TcTc superconductors using unpolarized and polarized neutron techniques. In high-TcTc materials, we observe transitions from triangular to square flux line lattices (FLLs) which probably represent the effects of d-wave pairing. In niobium, a supposedly ‘conventional’ superconductor, even more FLL phase transitions can be observed, into structures which spontaneously break the crystal symmetry. Observations of polarized neutron scattering intensities from niobium with a high density of pinning centers show the effects of pinning on the spin-dependence of the signal. Other possible applications of polarized neutrons scattering from the FLL are mentioned.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Ted Forgan, Richard J. Lycett, Charlotte Bowell, Demetris Charalambous, Bela Farago, Mark Laver, Bob Cubitt, Charles Dewhurst,