Nature of the pairing and vortex states are studied in Sr2RuO4 using a Hall probe array. No clear evidence for the spontaneous magnetic field, accompanying the time-reversal symmetry breaking states, has been obtained. Magnetization with Ha∥c shows an anomaly close to Hc2 and a peak near Ha = 0. We interpret the former to be due to the synchronization peak effect. Hc1 or change in the vortex lattice structure could be relevant to the latter.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering