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MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.42: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster C
Magnetic phase diagram of Kitaev Quantum Spin Liquid candidate Na3Co2SbO6 — •Kranthi Kumar Bestha1,2, Manaswini Sahoo1,2, Ryan Christopher Morrow1, Andrey Maljuk1, Bernd Büchner1,2, Laura Teresa Corredor Bohorquez1, and Anja U. B. Wolter1 — 1Institute for Solid State Research, Leibniz IFW Dresden 01069, Dresden, Germany — 2Institute of Solid State and Materials Physics, TU Dresden, 01062 Dresden, Germany
The quest for exotic Quantum Spin Liquids (QSL) with the most entangled quantum states, particularly in Kitaev Quantum Spin Liquid candidates, has posed significant challenges in the last two decades. The presence of non-Kitaev interactions has been a primary obstacle, as they destabilize the QSL ground state. To overcome this hurdle, a search for candidates with more localized d-orbitals, such as 3d cobaltates, was proposed, aiming to eliminate non-Kitaev interactions despite their weak spin-orbit interaction. In this study, we employed thermodynamic methods to characterize such a cobaltate KQSL candidate, Na3Co2SbO6 (NCSO). Our investigations, including M(H,T) and Cp(T) studies on high quality single crystals, confirm AFM order in NCSO at TN = 7 K. Our M(T) data reveal that NCSO is an easy-plane magnet with large anisotropy in ab-plane and two metamagnetic transitions, manifestation of field-induced phases in the ordered phase. From the M(H), M(T) and Cp(T) data we mapped out the magnetic phase diagram of NCSO in the light of theoretical predictions.
Keywords: Kitaev Quantum Spin Liquid; Frustrated magnet; Antiferromagnet; thermodynamic methods; spin-orbit interaction