نتایج جستجو برای: iron based superconductor

تعداد نتایج: 3065996  

2009
Kazuhiko Kuroki Hideo Aoki

For the iron-based high Tc superconductor LaFeAsO1−xFx, we construct a minimal model, where all of the five Fe d bands turn out to be involved. We then investigate the origin of superconductivity with a five-band random-phase approximation by solving the Eliashberg equation. We conclude that the spin fluctuation modes arising from the nesting between the disconnected Fermi pockets realise, basi...

Journal: :Physical review letters 2008
Kazuhiko Kuroki Seiichiro Onari Ryotaro Arita Hidetomo Usui Yukio Tanaka Hiroshi Kontani Hideo Aoki

For a newly discovered iron-based high T_{c} superconductor LaFeAsO1-xFx, we have constructed a minimal model, where inclusion of all five Fe d bands is found to be necessary. The random-phase approximation is applied to the model to investigate the origin of superconductivity. We conclude that the multiple spin-fluctuation modes arising from the nesting across the disconnected Fermi surfaces r...

Journal: :Science 2021

Pervasive criticality Iron-based superconductors are believed to host a quantum critical point (QCP), zero-temperature phase transition, beneath the “dome” delineating superconducting phase. Elucidating nature of this QCP is, however, tricky. Worasaran et al. set out do just that in prototypical iron-based superconductor, barium iron arsenide. By applying strain their samples, researchers found...

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