Shape dependent magnetic and optical properties in silicene nanodisks: A first principles study

Chowdhury, Suman; Nath, Prem; Jana, Debnarayan

doi:10.1016/j.jpcs.2015.03.017

Cited by 17 publications

(4 citation statements)

References 64 publications

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“…Chowdhury et al [33] have studied the shape dependency on magnetic and optical (discussed later) properties of silicene nanodisks by using DFT. Different shapes of silicene nanodisks studied are depicted in figure 20.…”

Section: Nanoribbonsmentioning

confidence: 99%

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A theoretical review on electronic, magnetic and optical properties of silicene

2016

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Inspired by the success of graphene, various two dimensional (2D) structures in free standing (FS) (hypothetical) form and on different substrates have been proposed recently. Silicene, a silicon counterpart of graphene, is predicted to possess massless Dirac fermions and to exhibit an experimentally accessible quantum spin Hall effect. Since the effective spin-orbit interaction is quite significant compared to graphene, buckling in silicene opens a gap of 1.55 meV at the Dirac point. This band gap can be further tailored by applying in plane stress, an external electric field, chemical functionalization and defects. In this topical theoretical review, we would like to explore the electronic, magnetic and optical properties, including Raman spectroscopy of various important derivatives of monolayer and bilayer silicene (BLS) with different adatoms (doping). The magnetic properties can be tailored by chemical functionalization, such as hydrogenation and introducing vacancy into the pristine planar silicene. Apart from some universal features of optical absorption present in all these 2D materials, the study on reflectivity modulation with doping (Al and P) concentration in silicene has indicated the emergence of some strong peaks having the robust characteristic of a doped reflective surface for both polarizations of the electromagnetic (EM) field. Besides this, attempts will be made to understand the electronic properties of silicene from some simple tight-binding Hamiltonian. We also point out the importance of shape dependence and optical anisotropy properties in silicene nanodisks and establish that a zigzag trigonal possesses the maximum magnetic moment. We also suggest future directions to be explored to make the synthesis of silicene and its various derivatives viable for verification of theoretical predictions. Although this is a fairly new route, the results obtained so far from experimental and theoretical studies in understanding silicene have shown enough significant promising features to open a new direction in the silicon industry, silicon based nano-structures in spintronics and in opto-electronic devices.

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Section: Nanoribbonsmentioning

confidence: 99%

“…Moreover, a vacancy in the silicene network can also induce magnetism [31]. Edge geometry of silicene nano disks substantially controls its optical properties [33]. Ciraci et al [34] have extensively studied many aspects of silicene and stabilization properties with respect to defects.…”

Section: Introductionmentioning

confidence: 99%

A theoretical review on electronic, magnetic and optical properties of silicene

2016

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“… 89 However, for perpendicular polarization, two small, reasonably significant, peaks appear for P doping due to buckling in the nanosheet. Using DFT, Chowdhury et al 90 investigated the influence of silicone nanodisk form on its magnetic and optical characteristics (addressed later). The overall number of atoms and the number of atoms in the edges are the only two factors that set these formations apart from one another, other than shape.…”

Section: Properties Of 2d Materialsmentioning

confidence: 99%

Graphene-like emerging 2D materials: recent progress, challenges and future outlook

Uddin,

Kabir,

Ali

et al. 2023

RSC Adv.

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“…The next element after carbon along group-IV is silicon. The hexagonal monolayer of silicon is known as silicene [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

A review on transport characteristics and bio-sensing applications of silicene

Ghosal,

Bandyopadhyay,

Chowdhury

et al. 2023

Rep. Prog. Phys.

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Silicene, a silicon counterpart of graphene, hass been predicted to possess massless Dirac fermions.Compared to graphene, the effective spin–orbit interaction is quite significant compared to grapheneand as a result, buckling in silicene opens a gap of 1.55 meV at the Dirac point. This band gap can befurther tailored by applying in plane stress, an external electric field, chemical functionalization anddefects. This special feature allows silicene and its various derivatives as potential candidates fordevice applications. In this short review, we would like to explore the transport features of the pristinesilicene and its possible nano derivatives. Besides, the recent progress in biosensor applications ofsilicene and its hetero-structures will be highlighted.We hope the results obtained from recentexperimental and theoretical studies in silicene will setup a benchmark in diverse applications such asin spintronics, bio-sensing and opto-electronic devices.

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Shape dependent magnetic and optical properties in silicene nanodisks: A first principles study

Cited by 17 publications

References 64 publications

A theoretical review on electronic, magnetic and optical properties of silicene

A theoretical review on electronic, magnetic and optical properties of silicene

Graphene-like emerging 2D materials: recent progress, challenges and future outlook

A review on transport characteristics and bio-sensing applications of silicene

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