Physica B: Condensed Matter

Pairing and vortex states in Sr2RuO4 studied by Hall probe magnetometry

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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. © 2000 Elsevier Science B.V. All rights reserved.