Stable and Metastable Phase Equilibria Involving the Cu6Sn5 Intermetallic

A metastable HCP intermetallic phase in Cu-Al bilayer films

Metastable Equilibria

We define a refinement of Nash equilibria called metastability. This refinement supposes that the given game might be embedded within any global game that leaves its local best-reply correspondence unaffected. A selected set of equilibria is metastable if it is robust against perturbations of every such global game; viz., every sufficiently small perturbation of the best-reply correspondence of...

Prediction of stable insulating intermetallic compounds

We explore the stability of structure exhibiting hybridization gaps across a broad range of binary and ternary intermetallic compositions by means of band structure and total energy calculations. This search reveals previously unknown metal-based insulators, some with large gaps exceeding 1 eV, such as Al2Fe and Al4IrRe. We confirm large gaps using a hybrid density functional including exact ex...

Diffusion-controlled anisotropic growth of stable and metastable crystal polymorphs in the phase-field crystal model.

We use a simple density functional approach on a diffusional time scale, to address freezing to the body-centered cubic (bcc), hexagonal close-packed (hcp), and face-centered cubic (fcc) structures. We observe faceted equilibrium shapes and diffusion-controlled layerwise crystal growth consistent with two-dimensional nucleation. The predicted growth anisotropies are discussed in relation with r...

Stable and Metastable Vacua in SQCD

We study deformations of N = 1 supersymmetric QCD that exhibit a rich landscape of supersymmetric and non-supersymmetric vacua.