Triangular to a Square Flux Lattice Phase Transition in YBa₂Cu₃O₇

Stephen Brown, Demetris Charalambous, Emma Jones, Edward Forgan, PG Kealey, A Erb, J Kohlbrecher

Research output: Contribution to journalArticle

2 Citations (Scopus)


We have used the technique of small-angle neutron scattering to observe magnetic flux lines directly in a YBa2Cu3O7 single crystal at fields higher than previously reported. For field directions close to perpendicular to the CuO2 planes, we find that the flux lattice structure changes smoothly from a distorted triangular coordination to nearly perfectly square as the magnetic induction approaches 11 T. The orientation of the square flux lattice is as expected from recent d-wave theories but is 45degrees from that recently observed in La1.83Sr0.17CuO4+delta.
Original languageEnglish
Pages (from-to)067004
Number of pages1
JournalPhysical Review Letters
Issue number6
Early online date1 Feb 2004
Publication statusPublished - 1 Feb 2004


Dive into the research topics of 'Triangular to a Square Flux Lattice Phase Transition in YBa₂Cu₃O₇'. Together they form a unique fingerprint.

Cite this