The diverse magneto-optical selection rules in bilayer black phosphorus

Wu, Jhao Ying; Chen, Szu Chao; Do, Thi-Nga; Su, W. P.; Gumbs, Godfrey; Lin, Ming–Fa

doi:10.1038/s41598-018-31358-w

Cited by 8 publications

(7 citation statements)

References 46 publications

(121 reference statements)

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“…There exist the valley-split or spin-split LL energy spectra, being very sensitive to the strength of electric and magnetic fields. The theoretical predictions on the diverse magneto-electronic properties in 2D group-IV materials could be verified from the high-resolution measurements of magnetic van Hove singularities [113,114], quantum Hall transports [77], and magneto-optical absorption spectra [71,72,154,155]. In short, [Sn, Pb]-, [Si, Ge]-and C-related monolayer materials have the different electronic properties, and so do the other fundamental properties.…”

Section: Significant Differences Among Monolayer Group-iv Systemsmentioning

confidence: 79%

“…Landau levels [71], the specific magneto-optical selection rules [71,72,154,155], the rich magnetoplasmon modes [156,157], and the unique quantum Hall conductivities [158,159].…”

Section: The Electronic Propertiesmentioning

confidence: 99%

“…[80] and many-particle theories [81], such as, optical absorption spectra & selection rules [71,72], magneto-electronic properties [154,155], Coulomb excitations and decay rates [41,64,80], and quantum Hall effects [78,79,158,159]. For example, a buckled tinene honeycomb lattice, which possesses the strong sp 3 chemical bonding and thus creates the multi-degenerate energy bands [Fig.…”

Section: Significant Differences Among Monolayer Group-iv Systemsmentioning

confidence: 99%

“…The magnetically quantized energy spectra and the sublattice-, orbital-and spin-dependent wave functions [subenvelope functions] could be computed very efficiently through the exact diagonalization method even for a rather large complex Hamiltonian matrix. Furthermore, the chemical and physical pictures are responsible for the diversified magneto-electronic properties [also for the magneto-optical absorption spectra and selection rules; [71,72,154,155]]. Recently, the calculated results show that tinene presents the unusual magnetic quantization [86], being absent in graphene, silicene and germanene.…”

Section: Significant Differences Among Monolayer Group-iv Systemsmentioning

confidence: 99%

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Stacking-configuration-enriched essential properties in bilayer silicenes

Liu,

Lin,

2019

Preprint

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The geometric, electronic and magnetic properties of silicene-related systems present the diversified phenomena through the first-principles calculations. The critical factors, the group-IV monoelements, buckled/planar structures, stacking configurations, layer numbers, and van der Waals interactions of bilayer composites are taken into account simultaneously. The developed theoretical framework is responsible for the concise physical and chemical pictures. The delicate evaluations and analyses are conducted on the optimal lattices, the atom-& spin-dominated energy bands, the atom-, orbital-& spin-projected vanHove singularities, and the magnetic moments. Most importantly, they achieve the decisive mechanisms, the buckled/planar honeycomb lattices, the multi-/single-orbital hybridizations, and the significant/negligible spin-orbital couplings. Furthermore, we investigate the stackingconfiguration-induced dramatic transformations of the essential properties by the relative shift in bilayer graphene and silicene. The lattice constant, interlayer distance, the buckle height, and the total energy essentially depend on the magnitude 1 and direction of the relative shift: AA → AB → AA ′ → AA. Apparently, sliding bilayer systems are quite different between silicene and graphene in terms of electronic properties, strongly depending on the buckled/planar honeycomb lattices, the multi-/single-orbital hybridizations, the dominant/observable interlayer hopping integrals, and the significant/negligible spin interactions. The predicted results can account for the up-to-date experimental measurements.

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Section: Significant Differences Among Monolayer Group-iv Systemsmentioning

confidence: 79%

“…Landau levels [71], the specific magneto-optical selection rules [71,72,154,155], the rich magnetoplasmon modes [156,157], and the unique quantum Hall conductivities [158,159].…”

Section: The Electronic Propertiesmentioning

confidence: 99%

Section: Significant Differences Among Monolayer Group-iv Systemsmentioning

confidence: 99%

Section: Significant Differences Among Monolayer Group-iv Systemsmentioning

confidence: 99%

See 2 more Smart Citations

Stacking-configuration-enriched essential properties in bilayer silicenes

Liu,

Lin,

2019

Preprint

Self Cite

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“…On the other hand, the generalized tight-binding model [ 10 ], being very suitable under a uniform perpendicular magnetic field, is successfully established for layered graphene systems [ 11 ]. The diverse phenomena of magnetic quantization are clearly revealed in the various two-dimensional emergent materials [ 12 ], such as the unusual magnetic properties of group-IV [ 13 ] and group-V [ 14 ] few-layer systems.…”

Section: Introductionmentioning

confidence: 99%

Rich p -type-doping phenomena in boron-substituted silicene systems

Pham

Nguyen

et al. 2020

R. Soc. open sci.

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The essential properties of monolayer silicene greatly enriched by boron substitutions are thoroughly explored through first-principles calculations. Delicate analyses are conducted on the highly non-uniform Moire superlattices, atom-dominated band structures, charge density distributions and atom- and orbital-decomposed van Hove singularities. The hybridized 2 p z –3 p z and [2s, 2 p x , 2 p y ]–[3s, 3 p x , 3 p y ] bondings, with orthogonal relations, are obtained from the developed theoretical framework. The red-shifted Fermi level and the modified Dirac cones/ π bands/ σ bands are clearly identified under various concentrations and configurations of boron-guest atoms. Our results demonstrate that the charge transfer leads to the non-uniform chemical environment that creates diverse electronic properties.

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Peculiar optical properties of bilayer silicene under the influence of external electric and magnetic fields

Gumbs

Shih

et al. 2019

Sci Rep

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We conduct a comprehensive investigation of the effect of an applied electric field on the optical and magneto-optical absorption spectra for AB-bt (bottom-top) bilayer silicene. The generalized tight-binding model in conjunction with the Kubo formula is efficiently employed in the numerical calculations. The electronic and optical properties are greatly diversified by the buckled lattice structure, stacking configuration, intralayer and interlayer hopping interactions, spin-orbital couplings, as well as the electric and magnetic fields ( ). An electric field induces spin-split electronic states, a semiconductor-metal phase transitions and the Dirac cone formations in different valleys, leading to the special absorption features. The Ez-dependent low-lying Landau levels possess lower degeneracy, valley-created localization centers, peculiar distributions of quantum numbers, well-behaved and abnormal energy spectra in Bz-dependencies, and the absence of anti-crossing behavior. Consequently, the specific magneto-optical selection rules exist for diverse excitation categories under certain critical electric fields. The optical gaps are reduced as Ez is increased, but enhanced by Bz, in which the threshold channel might dramatically change in the former case. These characteristics are in sharp contrast with those for layered graphene.

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The diverse magneto-optical selection rules in bilayer black phosphorus

Cited by 8 publications

References 46 publications

Stacking-configuration-enriched essential properties in bilayer silicenes

Stacking-configuration-enriched essential properties in bilayer silicenes

Rich p -type-doping phenomena in boron-substituted silicene systems

Peculiar optical properties of bilayer silicene under the influence of external electric and magnetic fields

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