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arXiv · 2604.19498

Termination-Controlled Fractionalization and Hybridization at Topological Interfaces in Organic Spin Chains

Khalid N. Anindya·Hong Guo
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Abstract

A single organic spin platform hosts both dimerized $S=\tfrac{1}{2}$ and effective Haldane $S=1$ sectors, linked by bond-texture inversion. At the junction, the fractional mode is controlled by termination parity: quenched by local fusion at one termination and released as an uncompensated spin-$\tfrac{1}{2}$-like degree of freedom at the parity-shifted one. Two such internal boundary modes of a finite embedded Haldane domain hybridize with an exponentially decaying splitting, establishing termination parity as a design principle for engineering and coupling fractional boundary modes.

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Khalid N. Anindya, Hong Guo. 2026-04-21. Termination-Controlled Fractionalization and Hybridization at Topological Interfaces in Organic Spin Chains. https://arxiv.org/abs/2604.19498

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