Spatially Anisotropic Spin J₁-J₂ Heisenberg Model for an Antiferromagnetic Square Lattice: Phase Diagrams

• Authors: V. Ilkovič
• Languages of publication: EN

Abstracts

EN

The new magnetic materials such as the layered oxide high-temperature superconductor can be well described by the Heisenberg spin model with nearest-neighbor coupling J₁ and next-nearest-neighbor coupling J₂. A generalization of the J₁-J₂ model is the J₁^{x}-J₁^{y}-J₂ model where the nearest-neighbor bonds have different strengths J₁^{x} and J₁^{y} in the x and y directions, respectively. The effect of the couplings J₂ and J₁^{y} on the antiferromagnetic Néel state is investigated within the quantum many-body Green function method.

Keywords

EN

75.10.Jm; 75.30.Ds; 75.30.Kz; 75.70.Ak

Discipline

• 75.30.Ds: Spin waves(for spin-wave resonance, see 76.50.+g)
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)
• 75.10.Jm: Quantized spin models, including quantum spin frustration
• 75.70.Ak: Magnetic properties of monolayers and thin films

• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 1
• Pages: 206-209

Dates

published

2018-01

received

2017-07-19

(unknown)

2017-11-28

Contributors

author

V. Ilkovič

• Bogoliubov Laboratory of Theoretical Physics, JINR, 141980 Dubna, Moscow region, Russia
• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

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Identifiers

DOI

10.12693/APhysPolA.131.206