FrameCalc
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Condensed matter

Fermi surfaces, phonons, bands, and magnetism

3D Fermi gas

kF, EF, TF

Bragg condition

Diffraction angles

Debye model

Low-T heat capacity

Drude conductivity

σ(ω) and τ

1D tight binding

E(k) cosine band

Phonon DOS

Debye ω² density

Curie–Weiss

χ(T) susceptibility

BCS gap sketch

Δ(T) interpolation

Hall coefficient

RH and n from RH

FrameCalc

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