Doping Driven (π, 0) Nesting and Magnetic Properties of Fe1+xTe Superconductors
Myung Joon Han, Sergey Y. Savrasov
DOI 10.1103/PhysRevLett.103.067001 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
To understand newly discovered superconductivity in Fe-based systems, we investigate the electronic structure and magnetic properties of Fe1+xTe using first-principles density functional calculations. While the undoped FeTe has the same Fermi surface nested at (π,π) as in Fe arsenides, doping by ∼0.5 electrons reveals a novel square-type Fermi surface showing a strong (π,0) nesting and leading to a different magnetic structure. Our result strongly supports the same mechanism of superconductivity in chalcogenides as in the arsenides, reconciling theory with existing experiments. The calculated magnetic interactions are found to be critically dependent on doping and notably different from the arsenides.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| LaFeAsO1-xFx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 27 | Pressure not reported | unknown |
Similar papers
Anomalous Transport Properties and Phase Diagram of the FeAs-Based SmFeAsO1−xFx Superconductors
similarity 0.96R. H. Liu et al.
Source status unknown — claims are unverified
Superconductivity in Ir-doped LaFe1−xIrxAsO
similarity 0.96Yanpeng Qi et al.
Source status unknown — claims are unverified
Doping Driven () Nesting and Magnetic Properties of FeTe Superconductors
similarity 0.96Myung Joon Han & Sergey Y. Savrasov · 2009 · arXiv:0903.2896
Source status unknown — claims are unverified
Superconductivity above 50 K in Tb1−xThxFeAsO
similarity 0.95Lin-Jun Li et al.
Source status unknown — claims are unverified
Inverse Iron Isotope Effect on the Transition Temperature of the (Ba,K)Fe2As2 Superconductor
similarity 0.95Parasharam M. Shirage et al.
Source status unknown — claims are unverified
Electron energy-loss spectroscopy and ab initio electronic structure of the LaOFeP superconductor
similarity 0.95Renchao Che et al.
Source status unknown — claims are unverified