Absence of magnetism in the superconductor Ba2Ti2Fe2As4O: Insights from inelastic neutron scattering measurements and ab initio calculations of phonon spectra

Autor: Zbiri, Mohamed, Jin, Wentao, Xiao, Yinguo, Sun, Yunlei, Su, Yixi, Demirdis, Sultan, Cao, Guanghan

Publikováno v: Phys. Rev. B 95, 174301 (2017)

Ba2Ti2Fe2As4O is a self-doped superconductor exhibiting a Tc ~ 21.5 K and containing, distinctively with respect to other Fe-based superconductors, not only [Fe2As2] layers but also conducting [Ti2O] sheets. This compound exhibits a transition at T*

Externí odkaz: http://arxiv.org/abs/1702.00479

Disorder, critical currents, and vortex pinning energies in isovalently substituted BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$

Autor: Demirdis, Sultan, Fasano, Yanina, Kasahara, Shigeru, Terashima, Takahito, Shibauchi, Takasada, Matsuda, Yuji, Konczykowski, Marcin, Pastoriza, H., Van Der Beek, Cornelis Jacominus

Publikováno v: Physical Review B (Condensed Matter) 87 (2013) 094506

We present a comprehensive overview of vortex pinning in single crystals of the isovalently substituted iron-based superconductor BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$, a material that qualifies as an archetypical clean superconductor, containing only

Externí odkaz: http://arxiv.org/abs/1303.3382

Vortex pinning : a probe for nanoscale disorder in iron-based superconductors

Autor: Van Der Beek, Cornelis Jacominus, Demirdis, Sultan, Konczykowski, Marcin, Fasano, Yanina, Cejas-Bolecek, Nestor René, Pastoriza, H., Colson, Dorothée, Rullier-Albenque, F.

The pinning of quantized flux lines, or vortices, in the mixed state is used to quantify the effect of impurities in iron-based superconductors (IBS). Disorder at two length scales is relevant in these materials. Strong flux pinning resulting from nm

Externí odkaz: http://arxiv.org/abs/1109.5479

Absence of magnetism in the superconductor B a 2 T i 2 F e 2 A s 4 O : Insights from inelastic neutron scattering measurements and ab initio calculations of phonon spectra

Autor: Zbiri, Mohamed, Jin, Wentao, Xiao, Yinguo, Sun, Yunlei, Su, Yixi, Demirdis, Sultan, Cao, Guanghan

Publikováno v: Physical review / B 95(17), 174301 (2017). doi:10.1103/PhysRevB.95.174301

Ba2Ti2Fe2As4O is a self-doped superconductor exhibiting a Tc∼21.5K and containing, distinctively with respect to other Fe-based superconductors, not only [Fe2As2] layers but also conducting [Ti2O] sheets. This compound exhibits a transition at T∗

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3364::268bed2bb3d57d2882fde4fba6a6d972
https://hdl.handle.net/2128/17492

Strong pinning and vortex energy distributions in single-crystalline Ba(Fe1−xCox)2As2

Autor: Demirdis, Sultan, Van Der Beek, Cornelis Jacominus, Fasano, Yanina, Cejas-Bolecek, Nestor, Pastoriza, H., Colson, Dorothée, Rullier-Albenque, F.

Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2011, 84, pp.094517. ⟨10.1103/PhysRevB.84.094517⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 84, pp.094517. ⟨10.1103/PhysRevB.84.094517⟩

The interrelation between heterogeneity and flux pinning is studied in Ba(Fe1-xCox)2As2 single crystals with widely varying Co-content x. Magnetic Bitter decoration of the superconducting vortex ensemble in crystals with x = 0:075 and x = 0:1 reveal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96de93ab8ee742c8929edd5b109738fe
https://hal.archives-ouvertes.fr/hal-00625543/document