Silicene and transition metal based materials: prediction of a two-dimensional piezomagnet

Dzade, Nelson Y.; Obodo, Kingsley Onyebuchi; Adjokatse, Sampson; Akosa, Collins Ashu; Amankwah, Emmanuel; Atiso, Clement D; Bello, Abdulhakeem; Igumbor, Emmanuel; Nzabarinda, Stany B; Obodo, J. T.; Ogbuu, Anthony O; Femi, Olu Emmanuel; Udeigwe, Josephine O; Waghmare, Umesh V.

doi:10.1088/0953-8984/22/37/375502

Cited by 52 publications

(40 citation statements)

References 18 publications

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“…Silicene shares many important properties with graphene, especially the most fascinating one: the Dirac-type dispersions at the Fermi surface, which is shown by both first-principles calculations [7][8][9][10][11][12][13][14] and the measurements from different experiments. 1,3,4 Other than the similarity with graphene, silicene has its own advantages.…”

Section: Introductionmentioning

confidence: 99%

Strain induced phase transitions in silicene bilayers: a first principles and tight-binding study

Lian

2013

AIP Advances

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Using first principles and tight-binding calculations, we have investigated the structures of silicene bilayers under the isotropic tensile strain. We find that (i) the strain induce several barrierless phase transitions. (ii) After the phase transitions, the bilayer structures become planar, similar with the AA-stacking graphene bilayers, but combined with the strong covalent interlayer bonds. The tight-binding results demonstrate that this silicene bilayer is characterized by intralayer sp2 hybridization and the interlayer sp1 hybridization. (iii) The electronic properties of the silicene bilayers change from semiconducting to metallic with the increase of strain

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Section: Introductionmentioning

confidence: 99%

Strain induced phase transitions in silicene bilayers: a first principles and tight-binding study

Lian

2013

AIP Advances

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“…It is observed that the electronic structure of silicene possesses linear dispersion around Dirac point which is similar to that of graphene and hence it is a potential candidate for applications in nanotechnology [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] . It is important to note that, the geometric structure of monolayer of silicene is slightly different from the planar structure of mono-layer of graphene.…”

Section: Introductionmentioning

confidence: 99%

Silicene beyond mono-layers—different stacking configurations and their properties

Kamal

Chakrabarti

Banerjee

et al. 2013

J. Phys.: Condens. Matter

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We carry out a computational study on the geometric and electronic properties of multi-layers of silicene in different stacking configurations using a state-of-art abinitio density functional theory based calculations. In this work we investigate the evolution of these properties with increasing number of layers (n) ranging from 1 to 10. Though, mono-layer of silicene possesses properties similar to those of graphene, our results show that the geometric and electronic properties of multilayers of silicene are strikingly different from those of multi-layers of graphene. We observe that there exist strong inter-layer covalent bondings between the layers in multi-layers of silicene as opposed to weak van der Waal's bonding which exists between the graphene layers. The inter-layer bonding strongly influences the geometric and electronic structures of these multi-layers. Like bilayers of graphene, silicene with two different stacking configurations AA and AB exhibits linear and parabolic dispersions around the Fermi level, respectively. However, unlike graphene, for bi-layers of silicene, these dispersion curves are shifted in band diagram; this is due to the strong inter-layer bonding present in the latter. For n > 3, we study the geometric and electronic properties of multi-layers with four different stacking configurations namely, AAAA, AABB, ABAB and ABC. Our results on cohesive energy show that all the multi-layers considered are energetically stable. Furthermore, we find that the three stacking configurations (AAAA, AABB and ABC) containing tetrahedral coordination have much higher cohesive energy than that of Bernal (ABAB) stacking configuration. This is in contrast to the case of multi-layers of graphene where ABAB is reported to be the lowest energy configuration. We also observe that bands near the Fermi level in lower energy stacking configurations AAAA, AABB and ABC correspond to the surface atoms and these surface states are responsible for the semi-metallic character of these multi-layers.

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“…For this reason, the silicene, which is a monolayer of the silicon atoms forming a 2D honeycomb lattice, can be also viewed as an alternative potential candidate for nanotechnology applications. This material has been synthesized and modeled using different approaches [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Interdistance Effects on Flat and Buckled Silicene Like-bilayers

Naji

Khalil

Labrim

et al. 2014

J. Phys.: Conf. Ser.

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Silicene and transition metal based materials: prediction of a two-dimensional piezomagnet

Cited by 52 publications

References 18 publications

Strain induced phase transitions in silicene bilayers: a first principles and tight-binding study

Strain induced phase transitions in silicene bilayers: a first principles and tight-binding study

Silicene beyond mono-layers—different stacking configurations and their properties

Interdistance Effects on Flat and Buckled Silicene Like-bilayers

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