The 3D phase diagram of iron pnictides where the critical temperature depends on charge density and microstrain in the active FeAs layers is proposed. The iron pnictides superconductors are shown to be a practical realization of a heterostructure at the atomic limit made of a superlattice of FeAs layers intercalated by spacer layers. We have focussed our interest on the A(1-x) B (x) Fe(2)As(2) (122) families and we show that FeAs layers have a tensile microstrain due to the misfit strain between the active layers and the spacers. We have identified the critical range of doping and microstrain where the critical temperature gets amplified to its maximum value.

Alessandro, R., Nicola, P., Ciasca, G., Fratini, M., Antonio, B. (2009). The Microstrain-Doping Phase Diagram of the Iron Pnictides: Heterostructures at Atomic Limit. JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 22(6), 589-593 [10.1007/s10948-009-0473-x].

The Microstrain-Doping Phase Diagram of the Iron Pnictides: Heterostructures at Atomic Limit

CIASCA, GABRIELE;FRATINI, MICHELA;
2009-01-01

Abstract

The 3D phase diagram of iron pnictides where the critical temperature depends on charge density and microstrain in the active FeAs layers is proposed. The iron pnictides superconductors are shown to be a practical realization of a heterostructure at the atomic limit made of a superlattice of FeAs layers intercalated by spacer layers. We have focussed our interest on the A(1-x) B (x) Fe(2)As(2) (122) families and we show that FeAs layers have a tensile microstrain due to the misfit strain between the active layers and the spacers. We have identified the critical range of doping and microstrain where the critical temperature gets amplified to its maximum value.
Alessandro, R., Nicola, P., Ciasca, G., Fratini, M., Antonio, B. (2009). The Microstrain-Doping Phase Diagram of the Iron Pnictides: Heterostructures at Atomic Limit. JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 22(6), 589-593 [10.1007/s10948-009-0473-x].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/147439
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 24
  • ???jsp.display-item.citation.isi??? 26
social impact