Direct evidence for an intrinsic square vortex lattice in the overdoped high-Tc superconductor La1.83Sr0.17CuO4+δ

R Gilardi, J Mesot, A Drew, U Divakar, S L Lee, E M Forgan, O Zaharko, K Conder, V K Aswal, C D Dewhurst, R Cubitt, N Momono, M Oda

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We report here the first direct observations of a well ordered vortex lattice in the bulk of a La2-xSrxCuO4+δ single crystal (slightly overdoped, x=0.17 ). Our small angle neutron scattering investigation of the mixed phase reveals a crossover from triangular to square coordination with increasing magnetic field. The existence of an intrinsic square vortex lattice has never been observed in high-temperature superconductors and is indicative of the coupling of the vortex lattice to a source of anisotropy, such as those provided by a d -wave order parameter or the presence of stripes.

Original languageEnglish
Pages (from-to)217003
Number of pages4
JournalPhysical Review Letters
Volume88
Issue number21
DOIs
Publication statusPublished - 27 May 2002

Keywords

  • HIGH-TEMPERATURE SUPERCONDUCTORS
  • FLUX-LINE-LATTICE
  • D-WAVE SUPERCONDUCTORS
  • ELECTRONIC-STRUCTURE
  • UNIAXIAL SUPERCONDUCTORS
  • NEUTRON-SCATTERING
  • YBA2CU3O7
  • TRANSITION
  • VORTICES
  • SYMMETRY

Fingerprint

Dive into the research topics of 'Direct evidence for an intrinsic square vortex lattice in the overdoped high-Tc superconductor La1.83Sr0.17CuO4+δ'. Together they form a unique fingerprint.

Cite this