Successive magnetic phase transitions in α − RuCl 3 : XY-like frustrated magnet on the honeycomb lattice
By Y. Kubota, Hidekazu Tanaka, T. Ono, Y. Narumi, K. Kindo. 2015
208 citations recorded by the source corpus.
The layered compound $\alpha$-RuCl$_3$ is composed of a honeycomb lattice of magnetic Ru$^{3+}$ ions with the $4d^5$ electronic state. We have investigated the magnetic properties of $\alpha$-RuCl$_3$ via magnetization and specific heat measurements using single crystals. It was observed that $\alpha$-RuCl$_3$ undergoes a structural phase transition at $T_{t}\,{\simeq}\,150$ K accompanied by fairly large hysteresis. This structural phase transition is expected to be similar to that observed in closely related CrCl$_3$. The magnetizations and magnetic susceptibilities are strongly anisotropic, which mainly arise from the anisotropic $g$-factors, i.e., $g_{ab}\,{\simeq}\,2.5$ and $g_c\,{\simeq}\,0.4$ for magnetic fields parallel and perpendicular to the $ab$ plane, respectively. These $g$-factors and the obtained entropy indicate that the effective spin of Ru$^{3+}$ is one-half, which results from the low-spin state. Specific heat data show that magnetic ordering occurs in four steps at zero magnetic field. The successive magnetic phase transitions should be ascribed to the competition among exchange interactions. The magnetic phase diagram for $H\,{\parallel}\,ab$ is obtained. We discuss the strongly anisotropic $g$-factors in $\alpha$-RuCl$_3$ and deduce that the exchange interaction is strongly XY-like. $\alpha$-RuCl$_3$ is magnetically described as a three-dimensionally coupled XY-like frustrated magnet on a honeycomb lattice.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/df10a0f84f68a3d35c5aea8bdcc7e8e0a449d5fa
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Condensed Matter Physics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Physics of the Kitaev Model: Fractionalization, Dynamic Correlations, and Material Connections (2017, background): “[142] Yumi Kubota, Hidekazu Tanaka, Toshio Ono, Yasuo Narumi, and Koichi Kindo.”
- Excitations in the field-induced quantum spin liquid state of α-RuCl3 (2017, methodology): “It is known to suppress the magnetic order in α-RuCl3 [8, 9, 21-26] raising the intriguing possibility of a field-induced QSL [20].”