Absence of magnetic long range order in Ba$_3$ZnRu$_2$O$_9$: A spin-liquid candidate in the $S=3/2$ dimer lattice

Ichiro Terasaki; Taichi Igarashi; Takayuki Nagai; Kenji Tanabe; Hiroki Taniguchi; Taku Matsushita; Nobuo Wada; Atsushi Takata; Takanori Kida; Masayuki Hagiwara; Kensuke Kobayashi; Hajime Sagayama; Reiji Kumai; Hironori Nakao; Youichi Murakami

doi:10.7566/JPSJ.86.033702

paper

Absence of magnetic long range order in Ba $_{3}$ ZnRu $_{2}$ O $_{9}$ : A spin-liquid candidate in the $S = 3/2$ dimer lattice

arXiv:1701.02257 · doi:10.7566/JPSJ.86.033702

Abstract

We have discovered a novel candidate for a spin liquid state in a ruthenium oxide composed of dimers of $S =$ 3/2 spins of Ru $^{5 +}$ ,Ba $_{3}$ ZnRu $_{2}$ O $_{9}$ . This compound lacks a long range order down to 37 mK, which is a temperature 5000-times lower than the magnetic interaction scale of around 200 K. Partial substitution for Zn can continuously vary the magnetic ground state from an antiferromagnetic order to a spin-gapped state through the liquid state. This indicates that the spin-liquid state emerges from a delicate balance of inter- and intra-dimer interactions, and the spin state of the dimer plays a vital role. This unique feature should realize a new type of quantum magnetism.

5 pages, 4 figures

Absence of magnetic long range order in Ba3​ZnRu2​O9​: A spin-liquid candidate in the S=3/2 dimer lattice

Abstract

References in corpus (4)

Absence of magnetic long range order in Ba $_{3}$ ZnRu $_{2}$ O $_{9}$ : A spin-liquid candidate in the $S = 3/2$ dimer lattice