Quantum Spin Ice with Frustrated Transverse Exchange: From a π-Flux Phase to a Nematic Quantum Spin Liquid

Physical Review Letters
Owen BentonNic Shannon

Abstract

Quantum spin ice materials, pyrochlore magnets with competing Ising and transverse exchange interactions, have been widely discussed as candidates for a quantum spin-liquid ground state. Here, motivated by quantum chemical calculations for Pr pyrochlores, we present the results of a study for frustrated transverse exchange. Using a combination of variational calculations, exact diagonalization, numerical linked-cluster and series expansions, we find that the previously studied U(1) quantum spin liquid, in its π-flux phase, transforms into a nematic quantum spin liquid at a high-symmetry, SU(2) point.

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Citations

Apr 14, 2020·Physical Review Letters·Han YanNic Shannon
Aug 18, 2020·Nature Physics·Romain SibilleTom Fennell
Apr 3, 2021·Physical Review Letters·Imre HagymásiDavid J Luitz

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