Projects per year
Abstract
We report on small-angle neutron scattering (SANS) measurements of the vortex lattice (VL) in twin-free YBa2Cu3O7, extending the previously investigated maximum magnetic field of <11 T up to 16.7 T with the field applied parallel to the c axis. This is a microscopic study of vortex matter in this region of the superconducting phase. We find that the high magnetic field VL displays a rhombic structure, with a field-dependent coordination that passes through a square configuration with no lock-in to a field-independent structure. The VL pinning reduces with increasing temperature but is seen to affect the VL correlation length even above the irreversibility temperature of the lattice structure. At high field and temperature we observe a VL melting transition, which appears to be first order. The vortex liquid phase above the transition does not give a detectable SANS signal. © 2014 American Physical Society.
Original language | English |
---|---|
Article number | 054502 |
Journal | Physical Review B |
Volume | 90 |
Issue number | 5 |
DOIs | |
Publication status | Published - 4 Aug 2014 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Fingerprint
Dive into the research topics of 'High magnetic field studies of the vortex lattice structure in YBa2 Cu3 O7'. Together they form a unique fingerprint.Projects
- 2 Finished
-
Scattering Studies of Emergent Phenomena at Extreme Conditions of Magnetic Field and Temperature
Blackburn, E. (Principal Investigator) & Forgan, T. (Co-Investigator)
Engineering & Physical Science Research Council
1/07/12 → 31/12/15
Project: Research
-
Magnetic Flux Structures and Phase Transitions in Unconventional and Conventional Superconductors
Forgan, T. (Principal Investigator) & Blackburn, E. (Co-Investigator)
Engineering & Physical Science Research Council
1/04/09 → 30/09/12
Project: Research Councils
-
Swedish Neutron Scattering Society Annual Meeting 2016
Blackburn, E. (Keynote speaker)
30 May 2016 → 31 May 2016Activity: Academic and Industrial events › Conference, workshop or symposium
-
Neutron Scattering in Magnetic Fields above 15 Tesla
Blackburn, E. (Invited speaker)
29 Oct 2014 → 30 Oct 2014Activity: Academic and Industrial events › Industry event