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Cited by 317

The DOI matches its Crossref record; 13 of the 13 references it cites were found in a registry or an index.

Successive magnetic phase transitions inα−RuCl3: XY-like frustrated magnet on the honeycomb lattice

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Kubota, Yumi, Tanaka, Hidekazu, Ono, Toshio, Narumi, Yasuo, Kindo, Koichi·2015·Physical Review B
DOI 10.1103/physrevb.91.094422
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Abstract

The layered compound $\ensuremath{\alpha}\ensuremath{-}{\mathrm{RuCl}}_{3}$ is composed of a honeycomb lattice of magnetic ${\mathrm{Ru}}^{3+}$ ions with the $4{d}^{5}$ electronic state. We have investigated the magnetic properties of $\ensuremath{\alpha}\ensuremath{-}{\mathrm{RuCl}}_{3}$ via magnetization and specific heat measurements using single crystals. It was observed that $\ensuremath{\alpha}\ensuremath{-}{\mathrm{RuCl}}_{3}$ undergoes a structural phase transition at ${T}_{t}\phantom{\rule{0.16em}{0ex}}\ensuremath{\simeq}\phantom{\rule{0.16em}{0ex}}150$ K accompanied by fairly large hysteresis. This structural phase transition is expected to be similar to that observed in closely related ${\mathrm{CrCl}}_{3}$. The magnetizations and magnetic susceptibilities are strongly anisotropic, which mainly arise from the anisotropic $g$ factors, i.e., ${g}_{ab}\phantom{\rule{0.16em}{0ex}}\ensuremath{\simeq}\phantom{\rule{0.16em}{0ex}}2.5$ and ${g}_{c}\phantom{\rule{0.16em}{0ex}}\ensuremath{\simeq}\phantom{\rule{0.16em}{0ex}}0.4$ for magnetic fields parallel and perpendicular to the $ab$ plane, respectively. These $g$ factors and the obtained entropy indicate that the effective spin of ${\mathrm{Ru}}^{3+}$ 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 $H\phantom{\rule{0.16em}{0ex}}\ensuremath{\parallel}\phantom{\rule{0.16em}{0ex}}ab$ is obtained. We discuss the strongly anisotropic $g$ factors in $\ensuremath{\alpha}\ensuremath{-}{\mathrm{RuCl}}_{3}$ and deduce that the exchange interaction is strongly XY-like. $\ensuremath{\alpha}\ensuremath{-}{\mathrm{RuCl}}_{3}$ is magnetically described as a three-dimensionally coupled XY-like frustrated magnet on a honeycomb lattice.

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Metadata

Authors
Kubota, Y., Tanaka, H., Ono, T., Narumi, Y., & Kindo, K.
Venue
Physical Review B
Publisher
American Physical Society (APS)
Published
2015-03-23
Volume
91
Issue
9
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
DOI
10.1103/physrevb.91.094422
OpenAlex
W2044506218
Cited by
317
References
13
FWCI
19.91
Type
journal article
Language
en
Open access
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