Inversion Phenomena of the Anisotropies of the Hamiltonian and the Wave-Function in the Distorted Diamond Type Spin Chain

Abstract

We investigate the ground-sate phase diagram of the XXZ version of the S=1/2 distorted diamond chain by use of the degenerate perturbation theory near the truncation point. In case of the XY-like interaction anisotropy, the phase diagram consists of the Neel phase and the spin-fluid phase. For the Ising-like interaction anisotropy case, it consists of three phases: the ferrimagnetic phase, the Neel phase and the spin-fluid phase. The magnetization in the ferrimagnetic phase is 1/3 of the saturation magnetization. The remarkable nature of the phase diagram is the existence of the Neel phase, although the interaction anisotropy is XY-like. And also, the spin-fluid phase appears in spite of the Ising-like interaction anisotropy. We call these regions "inversion regions".

7 pages, 4 figures

References in corpus (1)

• Possible Quasi-One-Dimensional Fermi Surface in La_{2-x}Sr_{x}CuO_4

Cited by in corpus (11)

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• Spin Frustration in an Exactly Solvable Ising-Heisenberg Diamond Chain
• Inversion phenomenon and phase diagram of the $S=1/2$ distorted diamond chain with the $XXZ$ interaction anisotropy
• Ground-State Phase Diagram of an Anisotropic S=1/2 Ladder with Different Leg Interactions
• Frustrated S=1/2 Two-Leg Ladder with Different Leg Interactions
• Navigating the phase diagram of quantum many-body systems in phase space
• Coupled Cluster Treatment of the Alternating Bond Diamond Chain
• Magnetization Plateau of the Distorted Diamond Spin Chain
• Ground-State Phase Diagram of (1/2,1/2,1) Mixed Diamond Chains with Single-Site Anisotropy