Kondo screening in a Majorana metal

S Lee, YS Choi, SH Do, W Lee, CH Lee, M Lee… - Nature …, 2023 - nature.com
Kondo impurities provide a nontrivial probe to unravel the character of the excitations of a
quantum spin liquid. In the S= 1/2 Kitaev model on the honeycomb lattice, Kondo impurities …

One-ninth magnetization plateau stabilized by spin entanglement in a kagome antiferromagnet

S Jeon, D Wulferding, Y Choi, S Lee, K Nam, KH Kim… - Nature Physics, 2024 - nature.com
Abstract The spin-1/2 antiferromagnetic Heisenberg model on a kagome lattice is
geometrically frustrated, which is expected to promote the formation of many-body quantum …

Randomly Hop** Majorana Fermions in the Diluted Kitaev System -

SH Do, CH Lee, T Kihara, YS Choi, S Yoon, K Kim… - Physical review …, 2020 - APS
dc and ac magnetic susceptibility, magnetization, specific heat, and Raman scattering
measurements are combined to probe low-lying spin excitations in α-Ru 1-x Ir x Cl 3 (x≈ …

Chemical tuning of magnetic anisotropy and correlations in

S Lee, J Park, Y Choi, K Raju, WT Chen, R Sankar… - Physical Review B, 2021 - APS
We report the temperature and composition dependence of static magnetic susceptibility
and Raman spectroscopic measurements on van der Waals antiferromagnets Ni 1− x Fe x …

Multiple spin-orbit excitons in α-RuCl3 from bulk to atomically thin layers

JH Lee, Y Choi, SH Do, BH Kim, MJ Seong… - npj Quantum …, 2021 - nature.com
Abstract The van der Waals Kitaev magnet α-RuCl3 has recently garnered considerable
attention due to its possible realization of topological spin liquids. Combining Raman …

Dynamic fingerprint of fractionalized excitations in single-crystalline Cu3Zn(OH)6FBr

Y Fu, ML Lin, L Wang, Q Liu, L Huang, W Jiang… - Nature …, 2021 - nature.com
Beyond the absence of long-range magnetic orders, the most prominent feature of the
elusive quantum spin liquid (QSL) state is the existence of fractionalized spin excitations, ie …

Continuous Spin Excitations in the Three-Dimensional Frustrated Magnet

W Yao, Q Huang, T **e, A Podlesnyak, A Brassington… - Physical Review Letters, 2023 - APS
Continuous spin excitations are widely recognized as one of the hallmarks of novel spin
states in quantum magnets, such as quantum spin liquids (QSLs). Here, we report the …

Magnetic and spin-orbit exciton excitations in the honeycomb lattice compound

Y Choi, JH Lee, S Lee, D Wulferding, H Fujihara… - Physical Review B, 2022 - APS
Ru X 3 trihalides (X= halogen atoms) offer a prominent platform for exploring the Kitaev spin
liquid. Using polarization-resolved Raman spectroscopy, we report a comparative study of …

Bosonic spinons in anisotropic triangular antiferromagnets

Y Choi, S Lee, JH Lee, S Lee, MJ Seong… - Nature …, 2021 - nature.com
Anisotropic triangular antiferromagnets can host two primary spin excitations, namely,
spinons and triplons. Here, we utilize polarization-resolved Raman spectroscopy to assess …

Kitaev Quantum Spin Liquids

Y Matsuda, T Shibauchi, HY Kee - arxiv preprint arxiv:2501.05608, 2025 - arxiv.org
Quantum spin liquids (QSLs) represent exotic states of matter where quantum spins interact
strongly yet evade long-range magnetic order down to absolute zero. Characterized by non …