We explore the topological behavior of the binary Zintl phase of the alkaline-earth-metal-based compounds Sr2Pb and Sr2Sn using both standard and hybrid density functional theory. It is found that Sr2Pb lies on the verge of a topological instability which can be suitably tuned through the application of a small uniaxial expansion strain (>3%). The resulting nontrivial topologically insulating state displays well-defined metallic states in the Sr2Pb(010) surface, whose evolution is studied as a function of the film thickness.

Sun Y, Chen XQ, FRANCHINI, C., Li DZ, Yunoki S, Li YY, et al. (2011). Strain-driven onset of nontrivial topological insulating states in Zintl Sr2X compounds (X = Pb, Sn). PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 84(16), 1-5 [10.1103/PhysRevB.84.165127].

Strain-driven onset of nontrivial topological insulating states in Zintl Sr2X compounds (X = Pb, Sn)

FRANCHINI, CESARE
Membro del Collaboration Group
;
2011

Abstract

We explore the topological behavior of the binary Zintl phase of the alkaline-earth-metal-based compounds Sr2Pb and Sr2Sn using both standard and hybrid density functional theory. It is found that Sr2Pb lies on the verge of a topological instability which can be suitably tuned through the application of a small uniaxial expansion strain (>3%). The resulting nontrivial topologically insulating state displays well-defined metallic states in the Sr2Pb(010) surface, whose evolution is studied as a function of the film thickness.
2011
Sun Y, Chen XQ, FRANCHINI, C., Li DZ, Yunoki S, Li YY, et al. (2011). Strain-driven onset of nontrivial topological insulating states in Zintl Sr2X compounds (X = Pb, Sn). PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 84(16), 1-5 [10.1103/PhysRevB.84.165127].
Sun Y; Chen XQ; FRANCHINI, CESARE; Li DZ; Yunoki S; Li YY; Fang Z.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/662804
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