Preparation and characterization of layered carbon hybrid framework materials pillared with titanocene

Sun, Huaming; Lin, Dezhi; Gao, Ziwei

doi:10.1007/s10934-016-0262-4

Cited by 2 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By increasing the interlayer distance to d 1 = 3.9Å, the layer separation of the edge states is strengthened, where we find | 1L|e That is, in addition to the external electric field, the interlayer distance is another degree of freedom which allow us to control the localization of the topologically protected edge states in (MC 4 S 4 ) 3 BL nanoribbons. It is worth to mention that such a control on the interlayer distance, between the organic layers, can be done through the current pillaring processes in MOFs [33,34].…”

Section: Bilayer Nanoribbonmentioning

confidence: 99%

Tuning the topological states in metal-organic bilayers

2017

View full text Add to dashboard Cite

We have investigated the energetic stability and the electronic properties of metal-organic topological insulators bilayers (BLs), (MC4S4)3-BL, with M=Ni and Pt, using first-principles calculations and tight-binding model. Our findings show that (MC4S4)3-BL is an appealing platform to perform electronic band structure engineering, based on the topologically protected chiral edge states. The energetic stability of the BLs is ruled by van der Waals interactions; being the AA stacking the energetically most stable one. The electronic band structure is characterized by a combination of bonding and anti-bonding kagome band sets (KBSs), revealing that (NiC4S4)3-BL presents a Z2-metallic phase, whereas (PtC4S4)3-BL may present both Z2-metallic phase or quantum spin Hall phase. Those non-trivial topological states were confirmed by the formation of chiral edge states in (MC4S4)3-BL nanoribbons. We show that the localization of the edge states can be controlled with a normal external electric field, breaking the mirror symmetry. Hence, the sign of electric field selects in which layer each set of edge states are located. Such a control on the (layer) localization, of the topological edge states, bring us an additional and interesting degree of freedom to control the transport properties in layered metal-organic topological insulator.

show abstract

Section: Bilayer Nanoribbonmentioning

confidence: 99%