Superconducting phases ofURu2Si2

Mixed phases of color superconducting quark matter

We examine electrically and color neutral quark matter in β-equilibrium focusing on the possibility of mixed phases between different color superconducting phases. To that end we apply the Gibbs criterion to ensure phase equilibrium and discuss the external conditions under which these mixed phases can occur. Neglecting surface and Coulomb effects we find a rich structure of different mixed pha...

Superconducting high-pressure phases of disilane.

High-pressure structures of disilane (Si(2)H(6)) are investigated extensively by means of first-principles density functional theory and a random structure-searching method. Three metallic structures with P-1, Pm-3m, and C2/c symmetries are found, which are more stable than those of XY(3)-type candidates under high pressure. Enthalpy calculations suggest a remarkably wide decomposition (Si and ...

Appearance of topological phases in superconducting nanocircuits.

We construct non-Abelian geometric transformations in superconducting nanocircuits, which resemble in properties the Aharonov-Bohm phase for an electron transported around a magnetic flux line. The effective magnetic fields can be strongly localized, and the path is traversed in the region where the energy separation between the states involved is at maximum, so that the adiabaticity condition ...

Topological superconducting phases in one dimension

Landau theory of superconducting phases inTh crystals

We consider the Landau theory of phase transitions for multiple superconducting phases in Th crystals. All possible phase transition sequences involving a single superconducting order parameter are found. These results may be applicable to PrOs4Sb12.