Low temperature magnetization of the S = 1/2 kagome antiferromagnet ZnCu3 (O H) 6CL 2

F. Bert; S. Nakamae; F. Ladieu; D. L’hôte; P. Bonville; F. Duc; J.-C. Trombe; P. Mendels

Low temperature magnetization of the S = 1/2 kagome antiferromagnet ZnCu3 (O H) 6CL 2

F. Bert ¹ S. Nakamae ² F. Ladieu ² D. L’hôte ² P. Bonville ^{2, 3} F. Duc ⁴ J.-C. Trombe ⁴ P. Mendels ¹

1 LPS - Laboratoire de Physique des Solides

2 SPEC - UMR3680 - Service de physique de l'état condensé

3 LNO - Laboratoire Nano-Magnétisme et Oxydes

SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay

4 CEMES - Centre d'élaboration de matériaux et d'études structurales

Abstract : The dc magnetization of the unique S= 1/ 2 kagome antiferromagnet Herbertsmithite has been measured down to 0.1 K. No sign of spin freezing is observed in agreement with former SR and ac-susceptibility results. The low temperature magnetic response is dominated by a defect contribution which exhibits an energy scale 1 K, likely reflecting the coupling of the defects. The defect component is saturated at low temperature by H8 T applied magnetic fields which enables us to estimate an upper bound for the nonsaturated intrinsic kagome susceptibility at T=1.7 K.

Document type :

Journal articles

Domain :

Physics [physics]

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https://hal-cea.archives-ouvertes.fr/cea-01395205
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Low temperature magnetization of the S = 1/2 kagome antiferromagnet ZnCu3 (O H) 6CL 2

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