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Showing 1–8 of 8 results
Advanced filters: Author: Kwangrae Kim Clear advanced filters

  • Resonant inelastic X-ray scattering interferometry reveals a highly entangled electronic phase in Nd2Ir2O7, enabling extraction of its entanglement structure and confirming the cubic-symmetry-breaking order predicted from complementary Raman spectroscopy.

    • Junyoung Kwon
    • Jaehwon Kim
    • B. J. Kim
    Research
    Nature Materials
    Volume: 25, P: 610-617

  • Concominant structural and electronic phase transitions in the excitonic insulator candidate Ta2NiSe5 make the identification of the driving mechanism of the transition challenging. Here, the authors report evidence for electronically-driven transition via Raman susceptibility measurements.

    • Kwangrae Kim
    • Hoon Kim
    • B. J. Kim
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • The mechanism of chiral symmetry breaking in condensed matter systems is not well understood. Now charge-lattice symmetry frustration has been shown to be a key factor governing chirality in a charge density wave of 1T-TiSe2.

    • Kwangrae Kim
    • Hyun-Woo J. Kim
    • B. J. Kim
    Research
    Nature Physics
    Volume: 20, P: 1919-1926

  • Spinons, or fractionalized collective excitations, have been reported in 1D systems but are debated in higher dimensions. Here the authors show that a heterostructure-based approach induces liquid-like spin dynamics in a 2D Heisenberg antiferromagnet, with isotropic continuum excitations extending to low energies.

    • Jin-Kwang Kim
    • Hoon Kim
    • B. J. Kim
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-9

  • We establish a spin nematic phase in the square-lattice iridate Sr2IrO4 and find a complete breakdown of coherent magnon excitations at short-wavelength scales, suggesting a many-body quantum entanglement in the antiferromagnetic state.

    • Hoon Kim
    • Jin-Kwang Kim
    • B. J. Kim
    Research
    Nature
    Volume: 625, P: 264-269

  • Antiferromagnetic order in iridates arising from unusual combinations of strong electron-correlation and spin-orbit coupling has drawn broad attention in the condensed matter community. In this work, the authors uncover the interplay between antiferromagnetic and nematic orders, highlighting its fundamental importance and potential functional applications.

    • Hyeokjun Heo
    • Jeongha An
    • Joonho Jang
    ResearchOpen Access
    Communications Physics
    Volume: 8, P: 1-9