Strain- and pressure-tuned magnetic interactions in honeycomb Kitaev materials

Yadav, R.; Rachel, S.; Hozoi, L.; van den Brink, J.; Jackeli, G.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Strain- and pressure-tuned magnetic interactions in honeycomb Kitaev materials

MPS-Authors

/persons/resource/persons280073

Hozoi, L.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280612

van den Brink, J.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Department Quantum Many-Body Theory (Walter Metzner), Max Planck Institute for Solid State Research, Max Planck Society;

Jackeli, G.
Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Yadav, R., Rachel, S., Hozoi, L., van den Brink, J., & Jackeli, G. (2018). Strain- and pressure-tuned magnetic interactions in honeycomb Kitaev materials. Physical Review B, 98(12): 121107(R).

Cite as: https://hdl.handle.net/21.11116/0000-000E-D510-F

Abstract

A range of honeycomb-lattice compounds has been proposed and investigated in the search for a topological Kitaev spin liquid. However, sizable Heisenberg interactions and additional symmetry-allowed exchange anisotropies in the magnetic Hamiltonian of these potential Kitaev materials push them away from the pure Kitaev spin-liquid state. Particularly the Kitaev-to-Heisenberg coupling ratio is essential in this respect. With the help of advanced quantum-chemistry methods, we explore how the magnetic coupling ratios depend on strain and pressure in several honeycomb compounds (Na2IrO3, beta-Li2IrO3, and alpha-RuCl3). We find that the Heisenberg and Kitaev terms are affected differently: For strain, in particular, the Heisenberg component decreases more rapidly than the Kitaev counterpart. This provides a scenario where strain can stabilize a spin liquid in such materials.