Hexagonal-shaped monolayer-bilayer quantum disks in graphene: A tight-binding approach
نویسندگان
چکیده
منابع مشابه
Quantum Hall effect in monolayer-bilayer graphene planar junctions
Jifa Tian,1,2,* Yongjin Jiang,1,3 Isaac Childres,1,2 Helin Cao,1,2 Jiangping Hu,1 and Yong P. Chen1,2,4,† 1Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA 2Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA 3Center for Statistical and Theoretical Condensed Matter Physics, and Department of Physics, Zhejiang Normal University, Jinhua 3...
متن کاملUnconventional fractional quantum Hall effect in monolayer and bilayer graphene
The commensurability condition is applied to determine the hierarchy of fractional fillings of Landau levels in monolayer and in bilayer graphene. The filling rates for fractional quantum Hall effect (FQHE) in graphene are found in the first three Landau levels in one-to-one agreement with the experimental data. The presence of even denominator filling fractions in the hierarchy for FQHE in bil...
متن کاملEffect of Curvature on the Mechanical Properties of Graphene: A Density Functional Tight-binding Approach
Due to the high cost of experimental analyses, researchers used atomistic modeling methods for predicting the mechanical behavior of the materials in the fields of nanotechnology. In the pre-sent study the Self-Consistent Charge Density Functional Tight-Binding (SCC-DFTB) was used to calculate Young's moduli and average potential energy of the straight and curved graphenes with different curvat...
متن کاملPopulation inversion in monolayer and bilayer graphene.
The recent demonstration of saturable absorption and negative optical conductivity in the Terahertz range in graphene has opened up new opportunities for optoelectronic applications based on this and other low dimensional materials. Recently, population inversion across the Dirac point has been observed directly by time- and angle-resolved photoemission spectroscopy (tr-ARPES), revealing a rela...
متن کاملWeak localization in monolayer and bilayer graphene.
We demonstrate quantitative experimental evidence for a weak localization correction to the conductivity in monolayer and bilayer graphene systems. We show how inter- and intra-valley elastic scattering control the correction in small magnetic fields in a way which is unique to graphene. A clear difference in the forms of the correction is observed in the two systems, which shows the importance...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2016
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.94.035415