Verifying possible pressure-induced Kitaev quantum spin liquid state in honeycomb magnet Na2Co2TeO6
Spin-orbit coupled honeycomb magnets with Kitaev interaction have received much attention, due to their potential of hosting exotic quantum states including the quantum spin liquids (QSL). Na2Co2TeO6 (NCTO) has recently been intensively studied as a putative Kitaev material. Hydrostatic pressure is expected provide a clean and reproducible way to continuously modify the exchange interactions in honeycomb Kitaev materials to realize the pure Kitaev QSL state, by compressing the lattice and altering the electronic structure as well as the Kitaev-to-Heisenberg coupling ratio accordingly. Very recently, it¿s theoretically predicted that the strength of the Heisenberg interaction will be negligible if the shrinkage of the in-plane Co-Co bond length exceed about 6 %, leaving a dominant Kitaev interaction quite promising for the realization of a true QSL state in NCTO. Therefore, we propose to conduct high-pressure neutron powder diffraction experiments on NCTO to clarify the evolution of its magnetic structure with hydrostatic pressure, to map out the pressure-temperature phase diagram, and to verify the theoretically proposed pressure-induced QSL state.
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The recommended format for citing this dataset in a research publication is in the following format:
JIN Wentao; Thomas C. Hansen; PENG Tengfei; Yixi Su and ZHOU Yishui. (2023). Verifying possible pressure-induced Kitaev quantum spin liquid state in honeycomb magnet Na2Co2TeO6. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2981
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