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arXiv · 2308.03971

Blocking particle dynamics in diamond chain with spatially increasing flux

Tomonari Mizoguchi·Yoshihito Kuno·Yasuhiro Hatsugai
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Abstract

Spatial non-uniformity in tight-binding models serves as a source of rich phenomena. In this paper, we study a diamond-chain tight-binding model with a spatially-modulated magnetic flux at each plaquette. In the numerical studies with various combinations of the minimum and maximum flux values, we find the characteristic dynamics of a particle, namely, a particle slows down when approaching the plaquette with $π$-flux. This originates from the fact that the sharply localized eigenstates exist around the $π$-flux plaquette. These localized modes can be understood from a squared model of the original one. This characteristic blocked dynamics will be observed in photonic waveguides or cold atoms.

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Tomonari Mizoguchi, Yoshihito Kuno, Yasuhiro Hatsugai. 2023-08-08. Blocking particle dynamics in diamond chain with spatially increasing flux. https://arxiv.org/abs/2308.03971

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