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Magnetic field and pressure phase diagrams of the triangular-lattice antiferromagnet CsCuCl 3 explored via magnetic susceptibility measurements with a proximity-detector oscillator

Abstract : The effect of pressure (P) on magnetic susceptibility of CsCuCl3 was examined in magnetic fields (µ0H) of up to 51 T using a proximity detector oscillator (PDO), and the H-P phase diagram of CsCuCl3 was constructed over the saturation field (Hsat). We found that, with increasing P, Hsat increases and the uud-phase that appeared at P = 0.7 GPa widened. Based on comparison between the experimental and calculated H-P phase diagrams, the Y-phase was predicted to appear above 1.7 GPa. The interchain antiferromagnetic exchange interaction in the ab-plane was evaluated and found to increase with increasing P, which is consistent with a previous study under high pressure [D. Yamamoto et al., Nat. Commun. 12, 4263 (2021).]. Moreover, an anomaly was observed below P = 0.6 GPa just below Hsat and might be a new phase transition derived from nonlinear response caused by the PDO technique
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https://hal.archives-ouvertes.fr/hal-03740294
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Soumis le : mardi 16 août 2022 - 13:07:27
Dernière modification le : mardi 13 septembre 2022 - 16:18:23

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UGA | CNRS | NEEL

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K. Nihongi, T. Kida, Y. Narumi, Julien Zaccaro, Y. Kousaka, et al.. Magnetic field and pressure phase diagrams of the triangular-lattice antiferromagnet CsCuCl 3 explored via magnetic susceptibility measurements with a proximity-detector oscillator. Physical Review B, American Physical Society, 2022, 105 (18), pp.184416. ⟨10.1103/PhysRevB.105.184416⟩. ⟨hal-03740294⟩

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