Elettra-Sincrotrone Trieste S.C.p.A. website uses session cookies which are required for users to navigate appropriately and safely. Session cookies created by the Elettra-Sincrotrone Trieste S.C.p.A. website navigation do not affect users' privacy during their browsing experience on our website, as they do not entail processing their personal identification data. Session cookies are not permanently stored and indeed are cancelled when the connection to the Elettra-Sincrotrone Trieste S.C.p.A. website is terminated.
More info

BaDElPh Highlights

Gap opening and orbital character in Ba(Fe1-xCox)2As2

Polarization-dependent ARPES measurements performed at low photon energy along high-symmetry directions in the Brillouin zone made it possible to get new insight into the role of the five Fe 3d orbitals in the complex electronic structure of Ba(Fe1−xCox)2As2 close to the Fermi level, and in particular, into the nature of the holelike pockets. Two distinct inner α pockets could be disentangled, suggesting that their origin is probably due to hybridized dxz and dyz, while the complex outer β pocket is mainly of dz2 nature.
The observation of momentum- and band-dependent superconducting gaps allowed us to detect the gap opening across Tc for both α and β pockets. These results confirm that the superconducting order parameter is consistent with a s± symmetry, and suggest that multiple harmonic terms may be included in its description.

Retrieve articles
Orbital nature of the hole-like Fermi surface in superconducting Ba(Fe1−xCox)2As2
B. Mansart, V. Brouet, E. Papalazarou, M. Fuglsang Jensen, L. Petaccia, S. Gorovikov, A.N. Grum-Grzhimailo, F. Rullier-Albenque, A. Forget, D. Colson, M. Marsi,
Phys. Rev. B 83, 064516 (2011).
doi: 10.1103/PhysRevB.83.064516

Opening of the superconducting gap in the hole pockets of Ba(Fe1−xCox)2As2 as seen via angle-resolved photoelectron spectroscopy
B. Mansart, E. Papalazarou, M. Fuglsang Jensen, V. Brouet, L. Petaccia, L. de Medici, G. Sangiovanni, F. Rullier-Albenque, A. Forget, D. Colson, M. Marsi,
Phys. Rev. B 85, 144508 (2012).
doi: 10.1103/PhysRevB.85.144508
Last Updated on Monday, 10 December 2018 10:10