Kitaev physics in the two-dimensional magnet
The Kitaev interaction, found in candidate materials such as , occurs through the metal ( )-ligand ( )-metal ( ) paths of the edge-sharing octahedra because the large spin-orbit coupling (SOC) on the metal atoms activates directional spin interactions. Here, we show that even in transition-metal compounds, where the SOC of the metal atom is negligible, heavy ligands can induce bond-dependent Kitaev interactions. In this work, we take as an example the transition-metal chalcogenophosphate and show that the key is found in the presence of a sizable SOC on the Se orbital, one which mediates the super-exchange between the nearest-neighbor Ni sites. Our study provides a pathway for engineering enhanced Kitaev interactions through the interplay of SOC strength, lattice distortions, and chemical substitutions.
Published by the American Physical Society 2024- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- Grant/Contract Number:
- AC02-05CH11231; AC02-76SF00515; SC0022216
- OSTI ID:
- 2434070
- Alternate ID(s):
- OSTI ID: 2426368
OSTI ID: 2434008
- Journal Information:
- Physical Review Research, Journal Name: Physical Review Research Journal Issue: 3 Vol. 6; ISSN 2643-1564; ISSN PPRHAI
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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