Geometrically frustrated GdInO3 : An exotic system to study negative thermal expansion and spin-lattice coupling
نویسندگان
چکیده
منابع مشابه
Metallic spin-liquid behavior of the geometrically frustrated Kondo lattice.
Strongly frustrated magnetism of the metallic pyrochlore oxide Pr2Ir2O7 has been revealed by single crystal study. While Pr 4f moments have an antiferromagnetic RKKY interaction energy scale of /T*/ = 20 K mediated by Ir 5d-conduction electrons, no magnetic long-range order is found except for partial spin freezing at 120 mK. Instead, the Kondo effect, including a lnT dependence in the resistiv...
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We review the mechanism of spin-lattice coupling in relieving the geometrical frustration of pyrochlore antiferromagnets, in particular spinel oxides. The tetrahedral unit, which is the building block of the pyrochlore lattice, undergoes a spin-driven Jahn-Teller instability when lattice degrees of freedom are coupled to the antiferromagnetism. By restricting our considerations to distortions w...
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Negative thermal expansion (NTE) in cubic ZrW2O8 has generated much interest due to its large, isotropic, and temperature independent behavior. Here, x-ray absorption fine structure data are presented for various atom pairs, providing evidence that the low-energy modes causing NTE correspond to the correlated vibrations of a WO4 tetrahedron and its three nearest ZrO6 octahedra. This involves tr...
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We report a systematic study of both quantum and classical geometrically frustrated Ising models with competing ordering mechanism. The ordering comes in the classical case from a coupling of two-dimensional (2D) layers and in the quantum model from the quantum dynamics induced by a transverse field. We develop a microscopic derivation of the Landau–Ginzburg–Wilson (LGW) Hamiltonian for these m...
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C. dela Cruz,1 F. Yen,1 B. Lorenz,1 Y. Q. Wang,1 Y. Y. Sun,1 M. M. Gospodinov,2 and C. W. Chu1,3,4 1Department of Physics and TCSUH, University of Houston, Houston, Texas 77204-5002, USA 2Institute of Solid State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria 3Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA 4Hong Kong University of Science ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2017
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.95.054103