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Creators/Authors contains: "Dun, Zhiling"

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  1. ; ; ; ; ; ; ; (, Nature Communications)
    Abstract The search for new elementary particles is one of the most basic pursuits in physics, spanning from subatomic physics to quantum materials. Magnons are the ubiquitous elementary quasiparticle to describe the excitations of fully-ordered magnetic systems. But other possibilities exist, including fractional and multipolar excitations. Here, we demonstrate that strong quantum interactions exist between three flavors of elementary quasiparticles in the uniaxial spin-one magnet FeI2. Using neutron scattering in an applied magnetic field, we observe spontaneous decay between conventional and heavy magnons and the recombination of these quasiparticles into a super-heavy bound-state. Akin to other contemporary problems in quantum materials, the microscopic origin for unusual physics in FeI2is the quasi-flat nature of excitation bands and the presence of Kitaev anisotropic magnetic exchange interactions. 
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  2. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review B)
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  3. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review Research)
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  4. ; ; ; ; ; ; ; ; ; ; et al (, Frontiers in Physics)
    We have performed combined elastic neutron diffuse, electrical transport, specific heat, and thermal conductivity measurements on the quasi–one-dimensional Ba 3 Co 2 O 6 (CO 3 ) 0.7 single crystal to characterize its transport properties. A modulated superstructure of polyatomic CO 3 2− is formed, which not only interferes the electronic properties of this compound, but also reduces the thermal conductivity along the c-axis. Furthermore, a large magnetic entropy is observed to be contributed to the heat conduction. Our investigations reveal the influence of both structural and magnetic effects on its transport properties and suggest a theoretical improvement on the thermoelectric materials by building up superlattice with conducting ionic group. 
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  5. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review B)
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  6. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review X)
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  7. ; ; ; ; ; ; ; ; ; (, Physical Review X)
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