scholarly journals Angle dependence of the Landau level spectrum in twisted bilayer graphene

2011 ◽  
Vol 84 (19) ◽  
Author(s):  
Min-Young Choi ◽  
Young-Hwan Hyun ◽  
Yoonbai Kim
Keyword(s):  
Landau Level ◽  
Bilayer Graphene ◽  
Angle Dependence ◽  
Level Spectrum ◽  
Twisted Bilayer Graphene

Landau level spectrum for bilayer graphene in a tilted magnetic field

2012 ◽  
Vol 24 (4) ◽  
pp. 045501 ◽  
Author(s):  
Young-Hwan Hyun ◽  
Yoonbai Kim ◽  
Corneliu Sochichiu ◽  
Min-Young Choi
Keyword(s):  
Magnetic Field ◽  
Landau Level ◽  
Bilayer Graphene ◽  
Level Spectrum ◽  
Tilted Magnetic Field

scholarly journals Fractal Landau-Level Spectra in Twisted Bilayer Graphene

Nano Letters ◽  
2012 ◽  
Vol 12 (7) ◽  
pp. 3833-3838 ◽  
Author(s):  
Z. F. Wang ◽  
Feng Liu ◽  
M. Y. Chou
Keyword(s):  
Landau Level ◽  
Bilayer Graphene ◽  
Twisted Bilayer Graphene

scholarly journals Angle-tunable intersubband photoabsorption and enhanced photobleaching in twisted bilayer graphene

Nano Research ◽  
2021 ◽  
Author(s):  
Eva A. A. Pogna ◽  
Xianchong Miao ◽  
Driele von Dreifus ◽  
Thonimar V. Alencar ◽  
Marcus V. O. Moutinho ◽  
...  
Keyword(s):  
Electronic Band Structure ◽  
Twist Angle ◽  
Interlayer Coupling ◽  
Bilayer Graphene ◽  
Relaxation Dynamics ◽  
Carrier Distribution ◽  
Absorption Bands ◽  
Electronic Band ◽  
Angle Dependence ◽  
Twisted Bilayer Graphene

AbstractVan der Waals heterostructures obtained by artificially stacking two-dimensional crystals represent the frontier of material engineering, demonstrating properties superior to those of the starting materials. Fine control of the interlayer twist angle has opened new possibilities for tailoring the optoelectronic properties of these heterostructures. Twisted bilayer graphene with a strong interlayer coupling is a prototype of twisted heterostructure inheriting the intriguing electronic properties of graphene. Understanding the effects of the twist angle on its out-of-equilibrium optical properties is crucial for devising optoelectronic applications. With this aim, we here combine excitation-resolved hot photoluminescence with femtosecond transient absorption microscopy. The hot charge carrier distribution induced by photo-excitation results in peaked absorption bleaching and photo-induced absorption bands, both with pronounced twist angle dependence. Theoretical simulations of the electronic band structure and of the joint density of states enable to assign these bands to the blocking of interband transitions at the van Hove singularities and to photo-activated intersubband transitions. The tens of picoseconds relaxation dynamics of the observed bands is attributed to the angle-dependence of electron and phonon heat capacities of twisted bilayer graphene.

scholarly journals Strained bilayer graphene: Band structure topology and Landau level spectrum

2011 ◽  
Vol 84 (4) ◽  
Author(s):  
Marcin Mucha-Kruczyński ◽  
Igor L. Aleiner ◽  
Vladimir I. Fal’ko
Keyword(s):  
Band Structure ◽  
Landau Level ◽  
Bilayer Graphene ◽  
Structure Topology ◽  
Level Spectrum
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