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Correlated states in β-Li2IrO3 driven by applied magnetic fields
Alejandro Ruiz1,2, Alex Frano3,4,5, Nicholas P Breznay3,4
1Department of Physics, University of California, Berkeley, CA, 94720, USA. alejandro@berkeley.edu.
In magnetic honeycomb iridates, a weak magnetic field induces a quantum correlated state, revealing delicate spin interactions and strong frustration. This finding advances the search for Kitaev quantum spin liquids.
Area of Science:
- Condensed Matter Physics
- Quantum Magnetism
Background:
- Kitaev quantum spin liquids are exotic states of matter arising from frustrated spin interactions in magnetic honeycomb iridates.
- Existing candidates often exhibit magnetic ordering, suggesting weak frustration.
Purpose of the Study:
- To investigate the magnetic behavior of β-Li₂IrO₃ under an applied magnetic field.
- To explore the potential for achieving a quantum correlated state in this material.
Main Methods:
- Application of a small magnetic field to β-Li₂IrO₃.
- Analysis of the resulting magnetic state and spin interactions.
Main Results:
- A magnetic field drives β-Li₂IrO₃ from an incommensurate ground state to a quantum correlated paramagnet.
- The induced paramagnetic state exhibits a zig-zag spin mode, similar to other Mott-Kitaev compounds.
- The rapid transition indicates finely balanced exchange interactions and strong frustration.
Conclusions:
- The findings suggest that β-Li₂IrO₃ is a promising platform for studying frustrated magnetism and quantum spin liquid physics.
- The observed field-induced crossover highlights the delicate balance of interactions in these materials.
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