A signature index for third order topological insulators

Autor:	Drissi, L. B, Saidi, E. H
Rok vydání:	2022
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science Mathematical Physics Physics - Computational Physics
Zdroj:	Journal Phys Condensed Matter, 32 (36) (2020)
Druh dokumentu:	Working Paper
Popis:	In this work, we develop an index signature characterising the third order topological phases in 3D systems. This index is an alternating sum of monomial signatures of Higgs triplet values at 3D corners. We extend our method to N-dimensional systems with open boundaries, and demonstrate that the topological invariant can be efficiently generalised to any space dimension including the second order topological insulators. Known results on lower dimensional systems are recovered and an interpretation in the Higgs space parameters is given. Comment: 21 PAGES, 5 FIGURES
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2207.02901 Zobrazit plný text záznamu View this record from Arxiv