Work

High-pressure phase transitions in the quantum spin liquid candidate Na2Co2TeO6 probed by Raman spectroscopy

Year: 2026

Type: preprint

Abstract: The quasi-2D magnet Na2Co2TeO6 (NCTO) is a candidate for a Kitaev Quantum Spin Liquid (KQSL) state. Pressure-tuning in such materials is of interest as a potential method to tune the Kitaev exchange interactions, which are strongly dependent on bond geometry. Here we report a Raman spectroscopic study of NCTO inside a diamond anvil cell (DAC) with pressure applied up to 16.3 GPa. Based on the changes in the Raman modes, this pressure range is divided into three regions. The appearance and disappearance of several modes and changes in the polarization dependence of the representative modes, most prominently above 13.8 GPa, point to pressure-induced phase transitions in this material.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2608.25076

Authors: Kolasseri, Ihsan Ahmed, Ravnebæk, Maria Mei, Das, Subhadip, Linnemann, Carl Jonas, Zhou, Haidong, Frydendahl, Christian, Bremholm, Martin, Chen, Yong P.

Institutions: Aarhus University, University of Copenhagen, University of Tennessee at Knoxville

Language: English

Topic: Advanced Condensed Matter Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Villum Fonden

Awards: G1929547546, G736417803

OpenAlex ID: W7204450137

Cites: 1

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Related to: 10