Tetrahedral Magnetic Order and the Metal-Insulator Transition in the Pyrochlore Lattice of Cd2Os2O7

Abstract

Cd2Os2O7 shows a peculiar metal-insulator transition at 227 K with magnetic ordering in a frustrated pyrochlore lattice, but its magnetic structure in the ordered state and the transition origin are yet uncovered. We observed a commensurate magnetic peak by resonant x-ray scattering in a high-quality single crystal. X-ray diffraction and Raman scattering experiments confirmed that the transition is not accompanied with any spatial symmetry breaking. We propose a noncollinear all-in/all-out spin arrangement on the tetrahedral network made of Os atoms. Based on this we suggest that the transition is not caused by Slater mechanism as believed earlier but by an alternative mechanism related to the formation of the specific tetrahedral magnetic order on the pyrochlore lattice in the presence of strong spin-orbit interactions.

arXiv comment5 pages, 4 figures, 1 table, to appear in Phys. Rev. Lett

References in corpus (10)

• Magnetic Pyrochlore Oxides
• Spin Driven Jahn-Teller Distortion in a Pyrochlore system
• Magnetic ordering in Gd2Sn2O7: the archetypal Heisenberg pyrochlore antiferromagnet
• Electronic structure of the pyrochlore metals Cd2Os2O7 and Cd2Re2O7
• Noncollinear magnetism and spin-orbit coupling in 5d pyrochlore oxide Cd2Os2O7
• Searching for the Slater Transition in the Pyrochlore Cd${}_2$Os${}_2$O${}_7$ with Infrared Spectroscopy
• Metal-insulator Transition in a Pyrochlore-type Ruthenium oxide, Hg2Ru2O7
• Spin superstructure and noncoplanar ordering in metallic pyrochlore magnets with degenerate orbitals
• Anomalous magnetic phase in an undistorted pyrochlore oxide Cd2Os2O7 induced by geometrical frustration
• Metal-Insulator Transition and Magnetic Order in the Pyrochlore Oxide Hg2Ru2O7

Cited by in corpus (71)

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• Learning multiple order parameters with interpretable machines
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• Slater Insulator in Iridate Perovskites with Strong Spin-Orbit Coupling
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• Orthogonal Magnetization and Symmetry Breaking in Pyrochlore Iridate Eu2Ir2O7
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• Magnetically induced metal-insulator transition in Pb2CaOsO6
• Spin and orbital dynamics through the metal-to-insulator transition in Cd${}_2$Os${}_2$O${}_7$ probed with high-resolution RIXS
• Electrical and Thermal Transport Properties of the beta-Pyrochlore Oxide CsW2O6
• Emergent chiral symmetry in non-bipartite kagome and pyrochlore lattices with spin-orbit coupling
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• Ultrafast dynamics in the Lifshitz-type 5$d$ pyrochlore antiferromagnet Cd${}_2$Os${}_2$O${}_7$
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