Strongly Anisotropic S=1 (Pseudo) Spin Systems: from Mean Field to Quantum Monte-Carlo

• Authors: Yu. Panov , A. Moskvin , V. Konev , E. Vasinovich , V. Ulitko
• Languages of publication: EN

Abstracts

EN

The S=1 pseudospin formalism was recently proposed to describe the charge degree of freedom in a model high-T_{c} cuprate with the on-site Hilbert space reduced to the three effective valence centers, nominally Cu^{1+;2+;3+}. With small corrections the model becomes equivalent to a strongly anisotropic S=1 quantum magnet in an external magnetic field. We have applied a generalized mean-field approach and quantum Monte-Carlo technique for the model 2D S=1 system to find the ground state phase with its evolution under deviation from half-filling and different correlation functions. Special attention is given to the role played by the on-site correlation ("single-ion anisotropy").

Keywords

EN

75.10.Hk; 75.10.Jm; 74.25.Dw

Discipline

• 74.25.Dw: Superconductivity phase diagrams
• 75.10.Hk: Classical spin models
• 75.10.Jm: Quantized spin models, including quantum spin frustration

• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 3
• Pages: 426-428

Dates

published

2018-03

Contributors

author

Yu. Panov

• Ural Federal University, Ekaterinburg 620083, Russia

author

A. Moskvin

• Ural Federal University, Ekaterinburg 620083, Russia

author

V. Konev

• Ural Federal University, Ekaterinburg 620083, Russia

author

E. Vasinovich

• Ural Federal University, Ekaterinburg 620083, Russia

author

V. Ulitko

• Ural Federal University, Ekaterinburg 620083, Russia

References

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Identifiers

DOI

10.12693/APhysPolA.133.426