http://www.cnr.it/ontology/cnr/individuo/prodotto/ID306556

Crossover between magnetism and superconductivity in LaFeAsO with low H-doping level (Articolo in rivista)

Type

Label

Crossover between magnetism and superconductivity in LaFeAsO with low H-doping level (Articolo in rivista) (literal)

Anno

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Alternative label

Lamura, G.; Shiroka, T.; Bonfa, P.; Sanna, S.; De Renzi, R.; Caglieris, F.; Cimberle, M. R.; Iimura, S.; Hosono, H.; Putti, M. (2014)
Crossover between magnetism and superconductivity in LaFeAsO with low H-doping level
in Journal of physics. Condensed matter (Print)
(literal)

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Lamura, G.; Shiroka, T.; Bonfa, P.; Sanna, S.; De Renzi, R.; Caglieris, F.; Cimberle, M. R.; Iimura, S.; Hosono, H.; Putti, M. (literal)

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Rivista

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Note

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CNR SPIN; University of Genoa; Swiss Federal Institute of Technology Zurich; Paul Scherrer Institute; University of Parma; University of Pavia; Unita CNISM Pavia; Tokyo Institute of Technology; Tokyo Institute of Technology (literal)

Titolo

Crossover between magnetism and superconductivity in LaFeAsO with low H-doping level (literal)

Abstract

By making a systematic study of the hydrogen-doped LaFeAsO system by means of dc resistivity, dc magnetometry, and muon-spin spectroscopy, we addressed the question of universality of the phase diagram of rare-earth-1111 pnictides. In many respects, the behaviour of LaFeAsO1-xHx resembles that of its widely studied F-doped counterpart, with H(-)realizing a similar (or better) electron doping in the LaO planes. In an x = 0.01 sample we found a long-range spin-density wave (SDW) order with T-N = 119 K, while at x = 0.05 the SDW establishes only at 38 K and, below T-c = 10 K, it coexists at a nanoscopic scale with bulk superconductivity. Unlike the abrupt magneticsuperconducting transition found in the La-1111 compound, the presence of a crossover region makes the H-doped system qualitatively similar to other Sm-1111, Ce-1111, and Nd-1111 families. (literal)

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