Quantum Phase Transitions of the Distorted Diamond Spin Chain
Tomosuke Zenda, Yuta Tachibana, Yuki Ueno, Kiyomi Okamoto, T\^oru, Sakai
TL;DR
This paper investigates the quantum phase transitions in a distorted diamond spin chain model, revealing three distinct phases and providing a detailed phase diagram through numerical analysis.
Contribution
It introduces a comprehensive analysis of the quantum phases in the distorted diamond spin chain, including phase identification and phase diagram construction.
Findings
Identification of three quantum phases: ferrimagnetic, spin gap, and Tomonaga-Luttinger liquid.
Use of numerical diagonalization and level spectroscopy for phase analysis.
Presentation of the ground state phase diagram.
Abstract
The frustrated quantum spin system on the distorted diamond chain lattice suitable for the alumoklyuchevskite is investigated using the numerical diagonalization of finite-size clusters and the level spectroscopy analysis. It is found that this model exhibits three quantum phases; the ferrimagnetic phase, the spin gap one, and the gapless Tomonaga-Luttinger liquid depending on the exchange coupling parameters. The ground state phase diagram is presented.
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