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2D Nodal-Line Semimetal: Drumhead Surface States

2D companion to the 3D nodal-line semimetal scene: a top-down bulk-gap heatmap of the kx-ky plane showing the ring of gapless Dirac points, the flat drumhead surface-state disk it protects, plus a local Dirac-cone cross-section with a live Wilson-loop Berry phase pinned to pi.

Materials Science2DAdvanced60 FPS📱 Mobile-adapted⇄ 3D version

This is the 2D counterpart to the 3D rendered nodal-line semimetal scene, computing the identical two-band k·p Hamiltonian through a top-down kx-ky bulk-gap heatmap instead of a rotatable 3D surface: the ring where conduction and valence bands touch, the flat "drumhead" surface band it protects, and a local Dirac-cone cross-section whose discretized Wilson-loop Berry phase stays pinned at π. Dial the ring radius, kz dispersion and surface hybridization to see the bulk gap, drumhead dome and topological invariant respond in real time.

⚙ Under the hood

2D companion to the 3D nodal-line semimetal scene: a top-down kx-ky bulk-gap heatmap showing the ring of gapless Dirac points and the flat drumhead surface-state disk it protects, plus a local Dirac-cone cross-section with a live Wilson-loop Berry phase pinned to pi.

nodal-line semimetaldrumhead surface stateBerry phasetopological semimetalmaterials sciencecondensed matter

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install