Two-quasiparticle states in 168Er

Quasiparticle states in superconducting superlattices

Abstract. The energy bands and the global density of states are computed for superconductor / normalmetal superlattices in the clean limit. Dispersion relations are derived for the general case of insulating interfaces, including the mismatch of Fermi velocities and effective band masses. We focus on the influence of finite interface transparency and compare our results with those for transpare...

Multi-quasiparticle States in 256Rf

3 - 6 - 2009 Multi - quasiparticle States in 256 Rf

Quasiparticle Interface States in Junctions Involving d-Wave Superconductors

Influence of surface pair breaking, barrier transmission and phase difference on quasiparticle bound states in junctions with d-wave superconductors is examined. Based on the quasiclassical theory of superconductivity, an approach is developed to handle interface bound states. It is shown in SIS’ junctions that low energy bound states get their energies reduced by surface pair breaking, which c...

Expansions for one quasiparticle states in spin 1 / 2 systemsNilanjana

Convergent expansions of the wavefunctions for the ground state and low-lying excited states of quantum transverse Ising systems are obtained. These expansions are employed to prove that the dispersion relation for a single quasi-particle has a convergent expansion.