Short course on the Su-Schrieffer-Heeger model

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Article

Date

2024-03

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Journal of Physics Research and Education

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Dey, Rajat Kumar

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University of North Bengal

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Ghosh, T. K. (2024). Short course on the Su-Schrieffer-Heeger model. Journal of Physics Research and Education, 2, 36–48. https://ir.nbu.ac.in/handle/123456789/5175

Authors

Ghosh, Tarun Kanti

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Abstract

Review various topological properties of a dimer Su-Schrieffer-Heeger tight-binding model. Exact analytical expressions of the energy spectrum and corresponding eigenstates for any choice of system parameters are provided. We discuss the system’s parity, time-reversal, and chiral symmetries. The system undergoes a topological phase transition while tuning the hopping parameters. The topological phase is associated with the presence of the boundary modes and establishes the bulk-boundary correspondence.

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2

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36 - 48

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