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Li Ern Chern on Muck Rack

Li Ern Chern

As seen in: Nature, Physical Review B
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Articles

Topological phase diagrams of in-plane field polarized Kitaev magnets

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By Li Ern Chern, T.C.M. Group, Claudio Castelnovo
| Physical Review B
While the existence of a magnetic field induced quantum spin liquid in Kitaev magnets remains under debate, its topological properties often extend to proximal phases where they can lead to unusual behaviors of both fundamental and applied interests. Subjecting a generic nearest-neighbor spin model of Kitaev magnets to a sufficiently strong in-plane magnetic field, we study the resulting polarized phase and the associated magnon excitations.
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Symmetry fractionalization in the gauge mean-field theory of quantum spin ice

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By Li Ern Chern, T.C.M. Group, Yong Kim, Félix Desrochers
| Physical Review B
Abstract Symmetry fractionalization is a ubiquitous feature of topologically ordered states that can be used to classify different symmetry-enriched topological phases and reveal some of their unique experimental signatures.
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Competing quantum spin liquids, gauge fluctuations, and anisotropic interactions in a breathing pyrochlore lattice

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By Li Ern Chern, TCM Group, Yong Kim, Claudio Castelnovo
| Physical Review B
Abstract We use the projective symmetry group analysis to classify the quantum spin liquids on the S=1/2 pyrochlore magnet with a breathing anisotropy. We find 40 Z2 spin liquids and 16 U(1) spin liquids that respect the F4¯3m space group and the time reversal symmetry. As an application, we consider the antiferromagnetic Heisenberg model, which is proposed to be the dominant interaction in the candidate material Ba3Yb2Zn5O11.
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