Stable line defects in silicene

Ghosh, Dibyajyoti; Parida, Prakash; Pati, Swapan K.

doi:10.1103/physrevb.92.195136

Cited by 23 publications

(25 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A closer look at the AFM image in the dark region ( Fig. 5B) reveals the signature of multiple structural motifs forming a "glassy-like" silicene region where buckled hexagons, pentagons, and heptagons appear interconnected, in line with other Si structures where nonhexagonal motifs have been predicted (56,63,64). A better estimate of the height difference among the 3 regions is obtained using force spectroscopy, as shown in Fig.…”

Section: Structure Of the Line Defects In The √mentioning

confidence: 93%

Quantitative determination of atomic buckling of silicene by atomic force microscopy

Pawlak

Drechsel

D’Astolfo

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

The atomic buckling in 2D “Xenes” (such as silicene) fosters a plethora of exotic electronic properties such as a quantum spin Hall effect and could be engineered by external strain. Quantifying the buckling magnitude with subangstrom precision is, however, challenging, since epitaxially grown 2D layers exhibit complex restructurings coexisting on the surface. Here, we characterize using low-temperature (5 K) atomic force microscopy (AFM) with CO-terminated tips assisted by density functional theory (DFT) the structure and local symmetry of each prototypical silicene phase on Ag(111) as well as extended defects. Using force spectroscopy, we directly quantify the atomic buckling of these phases within 0.1-Å precision, obtaining corrugations in the 0.8- to 1.1-Å range. The derived band structures further confirm the absence of Dirac cones in any of the silicene phases due to the strong Ag-Si hybridization. Our method paves the way for future atomic-scale analysis of the interplay between structural and electronic properties in other emerging 2D Xenes.

show abstract

Section: Structure Of the Line Defects In The √mentioning

confidence: 93%

Quantitative determination of atomic buckling of silicene by atomic force microscopy

Pawlak

Drechsel

D’Astolfo

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

show abstract

“…Then, the postulated Schroedinger equation is rewritten as the system of equations for the motion of classical liquid, similar to eq. (35) [18]. Yet at the next stage, to reach the complete classicality of the theory some ad hoc assumptions are added, however the resulting theories contradict to experimental results.…”

Section: Resultsmentioning

confidence: 99%

“…As was noticed earlier, the particle evolution in QM in some aspects is similar to the motion of continuous media [14]. This analogy is explored thoroughly in hydrodynamical QM model (QFD) [17,18], its connection with FM will be discussed in sect.…”

Section: Linear Model Of Fuzzy Dynamicsmentioning

confidence: 91%

Fuzzy Space–Time, Quantization and Gauge Invariance

Mayburov

2014

Springer Proceedings in Physics

View full text Add to dashboard Cite

Dodson-Zeeman fuzzy topology considered as the possible mathematical framework of quantum geometric formalism. In such formalism the states of massive particle m correspond to elements of fuzzy manifold called fuzzy points. Due to their weak (partial) ordering, m space coordinate x acquires principal uncertainty σ x . It's shown that m evolution on such manifold corresponds to quantum dynamics. It's argued also that particle's interactions on such fuzzy manifold should be gauge invariant.

show abstract

“…Moreover, theoretical investigations have predicted the possibility of existing 558-defect and 57-defect in SiNRs. 24,31 While the inuence of the extended defects on magnetism, electronic structures and transport properties of ZSiNRs is rarely reported. What's more, the edges of SiNRs are oen chemically modied because the edge dangling bonds of pristine SiNRs are unstable.…”

Section: Introductionmentioning

confidence: 99%

“…23,24 Defects are oen the rst concern in the actual application of two-dimensional materials because they can greatly alter the mechanical, electronic, magnetic, and transport properties of pure sheets. [25][26][27] In particular, line defects which could remain structurally stable have been extensively introduced into the graphene lattice.…”

Section: Introductionmentioning

confidence: 99%

Edge hydrogenation-induced spin-filtering and negative differential resistance effects in zigzag silicene nanoribbons with line defects

Zou

Cui

et al. 2017

RSC Adv.

View full text Add to dashboard Cite

We investigate the effects of line defects (558-defect and 57-defect) and edge hydrogenation (monohydrogenation and di-hydrogenation) on magnetism and spin transport of zigzag silicene nanoribbons (ZSiNRs) by first-principles calculations. The line defects and edge hydrogenation are able to tune the edge and interedge spin polarization in the defective ZSiNRs. The ZSiNRs can be formed into antiferromagnetic (AFM)-metals, ferromagnetic (FM)-metals, AFM and FM semiconductors through modulating the line defects and edge hydrogenation. Moreover, the perfect spin-filtering effect (SFE) with 100% spin polarization and negative differential resistance (NDR) effect can be achieved by dihydrogenation in our proposed devices. Our findings demonstrate that the ZSiNRs with diverse line defects and edge hydrogenation are promising materials for spintronic applications.

show abstract

Stable line defects in silicene

Cited by 23 publications

References 68 publications

Quantitative determination of atomic buckling of silicene by atomic force microscopy

Quantitative determination of atomic buckling of silicene by atomic force microscopy

Fuzzy Space–Time, Quantization and Gauge Invariance

Edge hydrogenation-induced spin-filtering and negative differential resistance effects in zigzag silicene nanoribbons with line defects

Contact Info

Product

Resources

About