Eu Doping in the GdCd Quasicrystal and Its Approximant Crystal GdCd.

The effect of Eu doping in the Tsai quasicrystal (QC) GdCd and its periodic 1/1 approximant crystal (AC) GdCd are investigated. This represents the first synthesis of Eu-containing stable QC samples, where three samples with the final composition GdEuCd at Eu doping concentrations = 0.06, 0.

Superconducting YAuSi and Antiferromagnetic GdAuSi with an Interpenetrating Framework Structure Built from 16-Atom Polyhedra.

Investigations of reaction mixtures RE(AuSi) (RE = Y and Gd) yielded the compounds REAuSi which adopt a new structure type, referred to as GdAuSi structure (80, 4/, = 16, = 12.8244(6)/12.7702(2) Å, and = 9.

Signatures of the electronic nature of pairing in high-T(c) superconductors obtained by non-equilibrium boson spectroscopy.

Understanding the pairing mechanism that gives rise to high-temperature superconductivity is one of the longest-standing problems of condensed-matter physics. Almost three decades after its discovery, even the question of whether or not phonons are involved remains a point of contention to some. Here we describe a technique for determining the spectra of bosons generated during the formation of Cooper pairs on recombination of hot electrons as they tunnel between the layers of a cuprate superconductor.