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Anisotropic spin-1/2 XXZ chains with uniform gamma interaction
1Department of Physics, University of Guilan, Rasht, 41335-1914, Iran. smahdavifar@gmail.com.
Scientific Reports
|December 3, 2024
Summary
This study maps the ground state phase diagram of spin-1/2 XXZ chains using iTEBD and Lanczos methods. It reveals distinct gapped and gapless phases characterized by various order parameters like magnetization and chirality.
Area of Science:
- Condensed Matter Physics
- Quantum Magnetism
- Many-Body Systems
Background:
- Spin-1/2 XXZ chains are fundamental models in quantum magnetism.
- Understanding their ground state phase diagram is crucial for various physical phenomena.
- Anisotropic interactions and uniform Gamma fields introduce complex behaviors.
Purpose of the Study:
- To determine the intricate ground state phase diagram of anisotropic spin-1/2 XXZ chains.
- To investigate the influence of uniform Gamma interaction on magnetic phases.
- To characterize distinct phases using order parameters and spectral properties.
Main Methods:
- Infinite time evolving block decimation (iTEBD) for numerical analysis.
- Lanczos technique for obtaining ground state properties.
- Mean-field framework with fermionic representation for analytical approximations.
Main Results:
- Detailed mapping of the ground state phase diagram.
- Identification of gapped and gapless domains at absolute zero.
- Characterization of phases by magnetization, staggered magnetization, chirality, and spin nematicity.
Conclusions:
- The study provides a comprehensive understanding of the spin-1/2 XXZ chain phase diagram.
- Numerical and analytical methods confirm the existence of diverse phases with unique long-range order.
- The findings contribute to the field of quantum magnetism and condensed matter theory.
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