2012/08/04 by Meng Wang, Miaoyin Wang, Hu Miao +14 · 32 citations
Business, Management and Accounting · Chemistry · Materials Science · Physics and Astronomy · #Angle-resolved photoemission spectroscopy #Chemistry #Condensed matter physics #Corporate Taxation and Avoidance #Electron #Electronic structure #Impurity #Inelastic neutron scattering #Iron-based superconductors research #Materials science #Neutron scattering #Physical chemistry #Physics #Scattering #Stoichiometry #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.86.144511
published in Physical Review B 86(14) (American Physical Society) · 5 figures,5 pages
arxiv created 2012/08/04 · openalex publication_date 2012/10/11 · arxiv updated 2012/10/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We use transport, inelastic neutron scattering, and angle-resolved photoemission experiments to demonstrate that the stoichiometric LiFeAs is an intrinsically electron-overdoped superconductor similar to those of the electron-overdoped NaFe_1\ensuremath-xTxAs and BaFe_2\ensuremath-xTxAs2 (T=Co, Ni). Furthermore, we show that although transport properties of the stoichiometric superconducting LiFeAs and Li-deficient nonsuperconducting Li_1\ensuremath-xFeAs are different, their electronic and magnetic properties are rather similar. Therefore, the nonsuperconducting Li_1\ensuremath-xFeAs is also in the electron overdoped regime, where small Li deficiencies near the FeAs octahedra can dramatically suppress superconductivity through the impurity scattering effect.