Results 11 to 20 of about 360,605 (265)

Disorder in twisted bilayer graphene [PDF]

Physical Review Research, 2020
We develop a theory for a type of disorder in condensed matter systems arising from local twist-angle fluctuations in two strongly coupled van der Waals monolayers twisted with respect to each other to create a flat-band moiré superlattice.
Justin H. Wilson, Yixing Fu, S. Das Sarma, J. H. Pixley   +3 more
doaj   +4 more sources

Thermal conductivity of twisted bilayer graphene

Nanoscale, 2014
The heat carriers – phonons – in twisted bilayer graphene do not behave in the same manner as that observed in individual graphene layers.
Li, Hongyang, Ying, Hao, Chen, Xiangping, Nika, Denis, Cocemasov, Alexandr I., Cai, Weiwei, Balandin, Alexander A., Chen, Shanshan   +7 more
openaire   +4 more sources

Electrons in bilayer graphene. [PDF]

, 2007
Electrons in bilayer graphene possess an unusual property: they are chiral quasiparticles characterized by Berry phase 2pi. We review the tight-binding model of bilayer graphene which determines the band structure and low-energy quasiparticle properties ...
Vladimir I. Fal’ko, Abergel, David S L, Fal'ko, Vladimir I.; id_orcid, Fal’ko, Vladimir I., David S.L. Abergel, McCann, Edward, Abergel, David S. L., Edward McCann   +7 more
core   +5 more sources

The low energy electronic band structure of bilayer graphene. [PDF]

, 2007
We employ the tight binding model to describe the electronic band structure of bilayer graphene and we explain how the optical absorption coefficient of a bilayer is influenced by the presence and dispersion of the electronic bands, in contrast to the ...
McCann, E., D. S.L. Abergel, Falko, Vladimir, McCann, Edward, Abergel, David S. L., E. McCann, V. I. Fal'ko, Abergel, D. S L, Fal'ko, V. I.; id_orcid   +8 more
core   +5 more sources

Graphene bilayers with a twist [PDF]

Nature Materials, 2020
Near a magic twist angle, bilayer graphene transforms from a weakly correlated Fermi liquid to a strongly correlated two-dimensional electron system with properties that are extraordinarily sensitive to carrier density and to controllable environmental factors such as the proximity of nearby gates and twist-angle variation.
Eva Y. Andrei, Allan H. MacDonald
openaire   +3 more sources

Correlated insulators in twisted bilayer graphene [PDF]

Physical Review B, 2021
version accepted in ...
Ipsita Mandal, Jia Yao, Erich J. Mueller
openaire   +4 more sources

Trions in twisted bilayer graphene

Physical Review B, 2022
30 pages, 19 ...
Frank Schindler, Oskar Vafek, B. Andrei Bernevig   +2 more
openaire   +3 more sources

Unconventional quantum Hall effect and Berry’s phase 2pi in bilayer graphene. [PDF]

, 2006
There are known two distinct types of the integer quantum Hall effect. One is the conventional quantum Hall effect, characteristic of two-dimensional semiconductor systems, and the other is its relativistic counterpart recently observed in graphene ...
Novoselov, K. S., Morozov, S. V., Fal’ko, Vladimir I., Schedin, F., McCann, Edward, Jiang, D., Katsnelson, M. I., Zeitler, U., Geim, A. K.   +8 more
core   +5 more sources

Strain fields in twisted bilayer graphene [PDF]

Nature Materials, 2021
29 pages, 6 figures plus supporting information (42 pages, 28 figures)
Nathanael P. Kazmierczak, Madeline Van Winkle, Colin Ophus, Karen C. Bustillo, Stephen Carr, Hamish G. Brown, Jim Ciston, Takashi Taniguchi, Kenji Watanabe, D. Kwabena Bediako   +9 more
openaire   +5 more sources

Phonons in twisted bilayer graphene [PDF]

Physical Review B, 2013
We theoretically investigated phonon dispersion in AA-stacked, AB-stacked and twisted bilayer graphene with various rotation angles. The calculations were performed using the Born-von-Karman model for the intra-layer atomic interactions and the Lennard-Jones potential for the inter-layer interactions.
Cocemasov, Alexandr I., Nika, Denis L., Balandin, Alexander A.   +2 more
openaire   +2 more sources