The geometric impact of the quantum Hall interface on a cone

Fuente: arXiv
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Autores principales: Li, Jie, Li, Qi, Hu, Zi-Xiang
Formato: Preprint
Publicado: 2025
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author Li, Jie
Li, Qi
Hu, Zi-Xiang
author_facet Li, Jie
Li, Qi
Hu, Zi-Xiang
contents Recently, quantum Hall interface has become a popular subject of research; distinct from that of the quantum Hall edge, which is constrained by external background confinement, the interface has the freedom to move, likely towards a string-like state. In disk geometry, it was known that the interface energy has an extra correction due to its curvature which depends on the size of the disk. In this work, we analytically calculate the energy of the integer quantum Hall interface on a cone surface which has the advantage that its curvature is more easily adjustable. By tuning the length and curvature of the interface by the cone angle parameter $β$, we analyze the dependence of the quantum Hall interface energy on the curvature and verify this geometric correction. Moreover, we find that the tip of the cone geometry has an extra contribution to the energy that reflects on the $u_2,u_4$ term.
format Preprint
id arxiv_https___arxiv_org_abs_2501_15732
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle The geometric impact of the quantum Hall interface on a cone
Li, Jie
Li, Qi
Hu, Zi-Xiang
Strongly Correlated Electrons
Mesoscale and Nanoscale Physics
Recently, quantum Hall interface has become a popular subject of research; distinct from that of the quantum Hall edge, which is constrained by external background confinement, the interface has the freedom to move, likely towards a string-like state. In disk geometry, it was known that the interface energy has an extra correction due to its curvature which depends on the size of the disk. In this work, we analytically calculate the energy of the integer quantum Hall interface on a cone surface which has the advantage that its curvature is more easily adjustable. By tuning the length and curvature of the interface by the cone angle parameter $β$, we analyze the dependence of the quantum Hall interface energy on the curvature and verify this geometric correction. Moreover, we find that the tip of the cone geometry has an extra contribution to the energy that reflects on the $u_2,u_4$ term.
title The geometric impact of the quantum Hall interface on a cone
topic Strongly Correlated Electrons
Mesoscale and Nanoscale Physics
url https://arxiv.org/abs/2501.15732