Dielectric Anomaly in the Quasi-One-Dimensional Frustrated Spin-1/2 System Rb$_{2}$(Cu$_{1-x}$M$_{x}$)$_{2}$Mo$_{3}$O$_{12}$ (M=Ni and Zn)

Yukio Yasui; Yudai Yanagisawa; Ryuji Okazaki; Ichiro Terasaki

doi:10.1103/PhysRevB.87.054411

paper

Dielectric Anomaly in the Quasi-One-Dimensional Frustrated Spin-1/2 System Rb $_{2}$ (Cu $_{1 - x}$ M $_{x}$ ) $_{2}$ Mo $_{3}$ O $_{12}$ (M=Ni and Zn)

arXiv:1302.0498 · doi:10.1103/PhysRevB.87.054411

Abstract

Dielectric and magnetic properties have been studied for poly-crystalline samples of quasi-one-dimensional frustrated spin-1/2 system Rb $_{2}$ (Cu $_{1 - x}$ M $_{x}$ ) $_{2}$ Mo $_{3}$ O $_{12}$ (M=Ni and Zn) which does not exhibit a three-dimensional magnetic transition due to quantum spin fluctuation and low dimensionality. A broad peak in the magnetic susceptibility - temperature curves originated from a short range helical ordering at low temperature is suppressed by the Ni and Zn substitution for Cu sites. The capacitance is found to anomalously increase with decreasing T below ~50 K, which is also suppressed by the impurity doping. The behavior of the anomalous capacitance component is found to be strongly connected with that of the magnetic susceptibility for Rb $_{2}$ (Cu $_{1 - x}$ M $_{x}$ ) $_{2}$ Mo $_{3}$ O $_{12}$ which indicates that the low-temperature dielectric response is driven by the magnetism.

10 pages, including 5 figures, Phys. Rev. B (accepted)

Dielectric Anomaly in the Quasi-One-Dimensional Frustrated Spin-1/2 System Rb $_{2}$ (Cu $_{1 - x}$ M $_{x}$ ) $_{2}$ Mo $_{3}$ O $_{12}$ (M=Ni and Zn)

Abstract

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Dielectric Anomaly in the Quasi-One-Dimensional Frustrated Spin-1/2 System Rb2​(Cu1−x​Mx​)2​Mo3​O12​ (M=Ni and Zn)

Abstract

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Cited by in corpus (8)

Dielectric Anomaly in the Quasi-One-Dimensional Frustrated Spin-1/2 System Rb $_{2}$ (Cu $_{1 - x}$ M $_{x}$ ) $_{2}$ Mo $_{3}$ O $_{12}$ (M=Ni and Zn)