Frustrated Quantum Rare-Earth Pyrochlores

In this review, we provide an introduction to the physics of a series of frustrated quantum rare-earth pyrochlores. We first give a background on the microscopic single- and two-ion physics of these materials, discussing the origins and properties of their exchange interactions and their minimal low...

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Bibliographic Details
Published inAnnual review of condensed matter physics Vol. 10; no. 1; pp. 357 - 386
Main Authors Rau, Jeffrey G, Gingras, Michel J.P
Format Journal Article
LanguageEnglish
Published Annual Reviews 10.03.2019
Subjects
anisotropic exchange
frustration
magnetism
order-by-disorder
pyrochlore
spin ice
spin liquid
topological
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Summary:In this review, we provide an introduction to the physics of a series of frustrated quantum rare-earth pyrochlores. We first give a background on the microscopic single- and two-ion physics of these materials, discussing the origins and properties of their exchange interactions and their minimal low-energy effective models before outlining what is known about their classical and quantum phases. We then make use of this understanding to discuss four important material examples, Er 2 Ti 2 O 7 , Yb 2 Ti 2 O 7 , Tb 2 Ti 2 O 7 , and Pr 2 Zr 2 O 7 , covering in some detail what is known experimentally and theoretically for each and then summarizing some key questions that remain open. Finally, we offer an outlook on some alternative material platforms for realizing similar physics and discuss what we see as prospects for future investigations on these quantum rare-earth pyrochlores.
ISSN:1947-5454
1947-5462
DOI:10.1146/annurev-conmatphys-022317-110520