Dirac's hidden geometry

Article Abstract:

Scientist Paul Dirac insisted that his approach to quantum physics was geometric and not algebraic but failed to give evidence of this in his pioneering, algebra-rich papers. He had a perfect opportunity to clarify the point at a speech he gave in the autumn of 1972 at Boston University but after giving a short, clear presentation he stopped before connecting it to the quantum world.

United States, Quantum theory, Quantum mechanics, Dirac, Paul Adrien Maurice

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Strong polarization enhancement in asymmetric three-component ferroelectric superlattices

Article Abstract:

Superlattices consisting of barium titanate, strontium titanate and calcium titanate are fabricated with atomic-scale control by high-pressure pulsed laser deposition on conduction, atomically flat strontium ruthenate layers. It is revealed that the specific interface structure and local asymmetries play an unexpected role in the polarization enhancement.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Barium Compounds, Polarization (Electricity), Chemical properties, Superlattices as materials, Superlattices, Ferroelectric devices

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