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arXiv · 2312.11765

Defect-induced localization of information in 1D Kitaev model

Varadharajan Muruganandam·Manas Sajjan·Sabre Kais
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Abstract

We discuss one-dimensional(1D) spin compass model or 1D Kitaev model in the presence of local bond defects. Three types of local disorders concerning both bond-nature and bond-strength that occur on kitaev materials have been investigated. Using exact diagonalization, two-point spin-spin structural correlations and four-point Out-of-Time-Order Correlators(OTOC) have been computed for the defective spin chains. The proposed quantities give signatures of these defects in terms of their responses to location and strength of defects. A key observation is that the information in the OTOC space gets trapped at the defect site giving rise to the phenomena of localization of information thus making these correlators a suitable diagnostic tool to detect and characterize these defects.

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Varadharajan Muruganandam, Manas Sajjan, Sabre Kais. 2023-12-19. Defect-induced localization of information in 1D Kitaev model. https://arxiv.org/abs/2312.11765

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