L. M. S. Alves

Superconductivity and magnetism in the KxMoO2−δ

Coexistence between superconductivity and magnetism is reported for the KxMoO2−δ samples. Photoemission experiments show that the presence of Mo3+ ions is responsible for the weak ferromagnetic ordering observed in the KxMoO2−δ samples. Magnetic ordering temperature and superconducting critical temperature (TC) ratio range from 7 to 18 in this compound. These are the highest ratios reported so far for a magnetic superconductor. TC decreases with increasing potassium composition (x). For the first time, TC near 10 K is reported in the K-Mo-O system.

Interplay between antiferrodistortive, ferroelectric, and superconducting instabilities in Sr1-x Ca-x TiO3-delta

SrTiO

Phase transitions in K-doped MoO2

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Defect Structure Versus Superconductivity in MeB2 Compounds (Me = Refractory Metals) and One-Dimensional Superconductors

undergoes a cubic-to-tetragonal phase transition at 105K. This antiferrodistortive transition is believed to be in competition with incipient ferroelectricity. Substituting strontium by isovalent calcium induces a ferroelectric order. Introducing mobile electrons to the system by chemical non-isovalent doping, on the other hand, leads to the emergence of a dilute metal with a superconducting ground state. The link between superconductivity and the other two instabilities is an open question, which gathers momentum in the context of the growing popularity of the paradigm linking unconventional superconductors and quantum critical points. We present a set of specific-heat, neutron-scattering and dielectric permittivity and polarization measurements on Sr

Unconventional metallic behavior and superconductivity in the K-Mo-O system

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Superconductivity and Physical Properties in the KxMoO2-δ

Ca

Telenursing Protocol to the Individual With Pulmonary Dysfunction and Heart Failure

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Effectiveness of Telenursing on Lung Function in Patients With Heart Failure in a Developing Country: A Protocol for Randomized Clinical Trial

TiO

Influence of the Fluoride Atoms Doping on the FeSe Superconductor

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Superconductivity in the K-Mo-O system

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