Weak localization in monolayer and bilayer graphene

2007 ◽  
Vol 366 (1863) ◽  
pp. 245-250 ◽  
Author(s):  
D.W Horsell ◽  
F.V Tikhonenko ◽  
R.V Gorbachev ◽  
A.K Savchenko
Keyword(s):  
Elastic Scattering ◽  
Magnetic Fields ◽  
Experimental Evidence ◽  
Carrier Concentration ◽  
Weak Localization ◽  
Bilayer Graphene ◽  
Graphene Layers ◽  
Scattering Mechanisms ◽  
Two Systems

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 of the interplay between the elastic scattering mechanisms and how they can be distinguished. Our observation of the correction at zero-net carrier concentration in both systems is clear evidence of the inhomogeneity engendered into the graphene layers by disorder.

scholarly journals Experimental evidence for interlayer decoupling distance of twisted bilayer graphene

AIP Advances ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 075228 ◽  
Author(s):  
Jun Woo Jeon ◽  
Hyeonbeom Kim ◽  
Hyuntae Kim ◽  
Soobong Choi ◽  
Byung Hoon Kim
Keyword(s):  
Experimental Evidence ◽  
Bilayer Graphene ◽  
Twisted Bilayer Graphene

scholarly journals THE MAGNETIZED UNIVERSE

2004 ◽  
Vol 13 (03) ◽  
pp. 391-502 ◽  
Author(s):  
MASSIMO GIOVANNINI
Keyword(s):  
Magnetic Fields ◽  
Experimental Evidence ◽  
Large Scale ◽  
High Energy Physics ◽  
High Energy ◽  
Present Review ◽  
Energy Physics

Cosmology, high-energy physics and astrophysics are today converging to the study of large scale magnetic fields. While the experimental evidence for the existence of large scale magnetization in galaxies, clusters and super-clusters is rather compelling, the origin of the phenomenon remains puzzling especially in light of the most recent observations. The purpose of the present review is to describe the physical motivations and the open theoretical problems related to the existence of large scale magnetic fields.

Carrier-Concentration-Dependent Magnetic Properties of the Diluted Magnetic Semiconductor SnMnte

1989 ◽  
Vol 151 ◽  
Author(s):  
H. J. M. Swagten ◽  
S. J. E. A. Eltink ◽  
W. J. M. De Jonge
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Experimental Evidence ◽  
Carrier Concentration ◽  
Diluted Magnetic Semiconductor ◽  
Critical Concentration ◽  
Magnetic Semiconductor ◽  
Magnetic Phases ◽  
Diluted Magnetic ◽  
Ferromagnetic Interactions

ABSTRACTIn this paper experimental evidence is presented for the carrier concentration dependence of the magnetic properties of Sn0.97Mn0.03Te, yielding a critical concentration above which ferromagnetic interactions are dominant. The observed behavior can be fairly well explained within a modified RKKY-model. Preliminary experiments on the low temperature magnetic phases indicate re-entrant spinglass behavior, which is qualitatively described with the spinglass model of Sherrington and Kirkpatrick.

scholarly journals Quasicrystalline 30° twisted bilayer graphene as an incommensurate superlattice with strong interlayer coupling

2018 ◽  
Vol 115 (27) ◽  
pp. 6928-6933 ◽  
Author(s):  
Wei Yao ◽  
Eryin Wang ◽  
Changhua Bao ◽  
Yiou Zhang ◽  
Kenan Zhang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Graphene Layer ◽  
Rotational Symmetry ◽  
Reciprocal Lattice ◽  
Double Resonance ◽  
Interlayer Coupling ◽  
Bilayer Graphene ◽  
Lattice Vector ◽  
Graphene Layers ◽  
Twisted Bilayer Graphene

The interlayer coupling can be used to engineer the electronic structure of van der Waals heterostructures (superlattices) to obtain properties that are not possible in a single material. So far research in heterostructures has been focused on commensurate superlattices with a long-ranged Moiré period. Incommensurate heterostructures with rotational symmetry but not translational symmetry (in analogy to quasicrystals) are not only rare in nature, but also the interlayer interaction has often been assumed to be negligible due to the lack of phase coherence. Here we report the successful growth of quasicrystalline 30° twisted bilayer graphene (30°-tBLG), which is stabilized by the Pt(111) substrate, and reveal its electronic structure. The 30°-tBLG is confirmed by low energy electron diffraction and the intervalley double-resonance Raman mode at 1383 cm−1. Moreover, the emergence of mirrored Dirac cones inside the Brillouin zone of each graphene layer and a gap opening at the zone boundary suggest that these two graphene layers are coupled via a generalized Umklapp scattering mechanism—that is, scattering of a Dirac cone in one graphene layer by the reciprocal lattice vector of the other graphene layer. Our work highlights the important role of interlayer coupling in incommensurate quasicrystalline superlattices, thereby extending band structure engineering to incommensurate superstructures.

Selective growth of monolayer and bilayer graphene patterns by a rapid growth method

Nanoscale ◽  
2019 ◽  
Vol 11 (14) ◽  
pp. 6727-6736 ◽  
Author(s):  
Maddumage Don Sandeepa Lakshad Wimalananda ◽  
Jae-Kwan Kim ◽  
Ji-Myon Lee
Keyword(s):  
Surface Treatment ◽  
Rapid Growth ◽  
Bilayer Graphene ◽  
Selective Growth ◽  
Catalytic Surface ◽  
Graphene Layers ◽  
Plasma Treatments ◽  
Growth Method

Selective surface treatment of a catalytic surface by different plasma treatments to control the number of graphene layers.

Weak localization in inhomogeneous magnetic fields

1987 ◽  
Vol 36 (6) ◽  
pp. 3135-3146 ◽  
Author(s):  
J. Rammer ◽  
A. L. Shelankov
Keyword(s):  
Magnetic Fields ◽  
Weak Localization

Weak localization in bilayer graphene with Li-intercalation/desorption

2018 ◽  
Vol 30 (30) ◽  
pp. 305701 ◽  
Author(s):  
Y Endo ◽  
S Ichinokura ◽  
R Akiyama ◽  
A Takayama ◽  
K Sugawara ◽  
...  
Keyword(s):  
Weak Localization ◽  
Bilayer Graphene
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