Magnetic Pyrochlore Oxides

By J. S. Gardner, Michel J. P. Gingras, J. Greedan. 2009

947 citations recorded by the source corpus.

Within the past 20 years or so, there has occurred an explosion of interest in the magnetic behavior of pyrochlore oxides of the type $A_{2}^{3+}$$B_{2}^{4+}$O$_{7}$ where $A$ is a rare-earth ion and $B$ is usually a transition metal. Both the $A$ and $B$ sites form a network of corner-sharing tetrahedra which is the quintessential framework for a geometrically frustrated magnet. In these systems the natural tendency to form long range ordered ground states in accord with the Third Law is frustrated, resulting in some novel short range ordered alternatives such as spin glasses, spin ices and spin liquids and much new physics. This article attempts to review the myriad of properties found in pyrochlore oxides, mainly from a materials perspective, but with an appropriate theoretical context.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/40efe1216fcefad6ac63f35207857374f811c5a4

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In Condensed Matter Physics

1. L. Savary
2. B. Gaulin
3. K. Ross
4. Hsin Lin
5. Arun Bansil
6. L. Balents
7. Tanmoy Das
8. Simon Trebst

In Electronic, Optical and Magnetic Materials

1. L. Balents

In Materials Chemistry

1. Hsin Lin
2. Arun Bansil
3. Tanmoy Das
4. L. Balents
5. Ashvin Vishwanath
6. Y. Ando
7. N. P. Armitage
8. E. Mele

Citations in the corpus

• Quantum Excitations in Quantum Spin Ice (2011, background): “The compounds Yb2Ti2O7, Er2Ti2O7, Pr2Sn2O7 [1] (and possibly Tb2Ti2O7 [8]) are of this type, and it has recently been argued that the spins in Yb2Ti2O7 and Er2Ti2O7 are controlled by exchange coupling rather than by the long-range dipolar interactions which dominate in spin ice [9,10].”
• Rare-Earth Chalcogenides: A Large Family of Triangular Lattice Spin Liquid Candidates (2018, background): “Quite recently, frustrated materials with magnetic rare-earth ions are proposed to be promising QSL candidates [20].”
• Colloquium : Topological band theory (2016, background): “Complex oxides are widely studied in the context of magnetism, metal-insulator transitions, superconductors, (Pickett 1989; Imada, Fujimori, and Tokura 1998; Gardner, Gingras, and Greedan 2010) and as platforms for oxide electronics.”