Details

Autor(en) / Beteiligte

• Pandeya, Ram Prakash
• Datta, Sawani
• Sakhya, Anup Pradhan
• Saha, Tanusree
• Ninno, Giovanni De
• Mondal, Rajib
• Moras, Paolo
• Jugovac, Matteo
• Carbone, Carlo
• Thamizhavel, A
• Maiti, Kalobaran

Titel

Doping induced band renormalization in 122-type Fe-based superconductor

Ist Teil von

• Journal of physics. Conference series, 2022-03, Vol.2164 (1), p.12004

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2022

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Abstract We study the electronic structure of a superconducting composition of 122-type Fe-based pnictide material, CaFe 1.9 Co 0.1 As 2 employing high resolution angle resolved photoemission spectroscopy technique. The experimental results exhibit three bands close to Fermi level at Γ-point of the Brillouin zone among which only one band crosses the Fermi level. In the parent compound, CaFe 2 As 2 , all the three bands cross the Fermi level and form three hole pockets. While the destruction of Fermi pockets due to electron doping (Co-substitution dopes electrons into the system) is expected, we observe significant orbital selective band renormalization with respect to the parent compound. It appears that the effect of spin-orbit coupling is stronger in the doped compound.