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A frustrated three-dimensional antiferromagnet: stacked J1-J2 layers
Onofre Rojas1, C J Hamer, J Oitmaa
1School of Physics, University of New South Wales, Sydney, NSW 2052, Australia.
Journal of Physics. Condensed Matter : an Institute of Physics Journal
|September 28, 2011
Summary
We investigated a frustrated 3D antiferromagnet, finding its quantum spin liquid phase shrinks with increased interlayer coupling and disappears at a critical point, leading to a direct transition to columnar order.
Area of Science:
- Condensed matter physics
- Quantum magnetism
Background:
- Frustrated magnets exhibit complex magnetic orders.
- The 2D J(1)-J(2) model hosts a quantum spin liquid phase.
Purpose of the Study:
- Investigate the impact of interlayer coupling on the 2D J(1)-J(2) quantum spin liquid.
- Determine the phase transitions in the 3D frustrated antiferromagnet.
Main Methods:
- Theoretical study of a frustrated 3D antiferromagnet.
- Analysis of stacked J(1)-J(2) layers.
Main Results:
- The quantum spin liquid phase narrows with increasing interlayer coupling.
- A triple point marks the vanishing of the quantum spin liquid phase.
- A first-order transition occurs from Néel to columnar order beyond the triple point.
Conclusions:
- Interlayer coupling fundamentally alters the magnetic phase diagram.
- The 3D system transitions directly to a robust columnar ordered state.
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