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Field-Induced Lifshitz Transition without Metamagnetism in CeIrIn(5)
D Aoki1,2,3, G Seyfarth4,5, A Pourret2,3
1Institute for Materials Research, Tohoku University, Oarai, Ibaraki 311-1313, Japan.
Abstract:
We report high magnetic field measurements of magnetic torque, thermoelectric power, magnetization, and the de Haas-van Alphen effect in CeIrIn_{5} across 28 T, where a metamagnetic transition was suggested in previous studies. The thermoelectric power displays two maxima at 28 and 32 T. Above 28 T, a new, low de Haas-van Alphen frequency with a strongly enhanced effective mass emerges, while the highest frequency observed at low field disappears entirely. This suggests a field-induced Lifshitz transition. However, longitudinal magnetization does not show any anomaly up to 33 T, thus ruling out a metamagnetic transition at 28 T.
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