Breathing-to-bending reconstruction in magic-angle twisted bilayer graphene is a soft-mode condensation of two A1 moiré flexural phonons that capture >99.5% of the Angstrom-scale displacement of 11164 atoms.
Cochran, Crystal stability and the theory of ferro- electricity, Advances in Physics9, 387 (1960)
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Overdamped polar nanoregion fluctuations provide the pairing glue at LaAlO3/KTaO3 interfaces, with geometric Rashba coupling yielding λ(θ) = λ0 + C sin²(θ) that maps to the observed quasi-linear Tc(θ) via Eliashberg solutions.
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Moir\'e Phonon Condensation in Magic-Angle Twisted Bilayer Graphene
Breathing-to-bending reconstruction in magic-angle twisted bilayer graphene is a soft-mode condensation of two A1 moiré flexural phonons that capture >99.5% of the Angstrom-scale displacement of 11164 atoms.
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Geometric Rashba Control of Polar Pairing at LaAlO$_3$/KTaO$_3$ Interfaces
Overdamped polar nanoregion fluctuations provide the pairing glue at LaAlO3/KTaO3 interfaces, with geometric Rashba coupling yielding λ(θ) = λ0 + C sin²(θ) that maps to the observed quasi-linear Tc(θ) via Eliashberg solutions.