SSH Model — Topological Edge States

Su-Schrieffer-Heeger chain with alternating hoppings t₁ (intra-cell) and t₂ (inter-cell). When |t₂|>|t₁|, winding number W=1 and in-gap edge states appear.

t₁ (intra-cell hopping)

0.50

t₂ (inter-cell hopping)

1.50

Chain size (N cells)

Topological Phase (W=1)

Gap: --

Edge state energy ≈ --