Effect of electron-doping in Ba2Na1−xCaxOsO6 Mott insulator with strong spin orbit coupling

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Title (deu)

Speaker / Lecturer

Samuele Sanna

U Bologna

Description (deu)

This talk was part of the Workshop on "Spin-Orbit Entangled Quantum Magnetism" held at the ESI September 23 -- 27, 2024. The Dirac-Mott insulator 5d1 Ba2NaOsO6 (BNOO) offers an optimal playground to study the effect of the intricate interplay between electron correlations and spin-orbit (SO) coupling when their energy scales are comparable in size. As a result, this material shows local distortions from the cubic symmetry revealing the presence of a broken local point symmetry (BLPS) phase as a precursor to a canted-antiferromagnetic state driven by a multipolar order, most likely of the antiferro-quadrupolar type [1]. Here we investigate the evolution of the magnetic and BLPS phases as a function the electron charge doping induced by the Ca/Na heterovalent substitution of Ba2Na1−xCaxOsO6 in the whole 0

Keywords (deu)

solid-state magnetismESIcondensed matter physics

Subject (eng)

ÖFOS 2012 -- 103 -- Physics, Astronomy

Type (eng)

lecture

Language

English [eng]

Persistent identifier

https://phaidra.univie.ac.at/o:2094773

Funder

Date created