Research news on First-principles calculations

First-principles calculations are computational techniques that determine the properties of materials or molecular systems directly from fundamental physical laws, typically quantum mechanics, without relying on empirical parameters fitted to experiments. Most implementations are based on electronic-structure methods such as density functional theory (DFT) or, less commonly, wavefunction-based approaches (e.g., coupled cluster, configuration interaction) to solve or approximate the many-body Schrödinger equation. They are used to predict structural, electronic, magnetic, vibrational, and thermodynamic properties, to explore potential energy surfaces, and to model processes such as chemical reactions, phase transitions, and transport at the atomic scale with controlled, systematically improvable approximations.

Atomic-level simulations predict transistor scaling limits

As the global semiconductor industry enters the so-called 2-nanometer process era, the actual size of transistors—the core components of semiconductor chips—still remains above 10 nm. How much smaller, then, can transistors ...

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