Results 41 to 50 of about 10,146 (239)

Terahertz Conductivity of Twisted Bilayer Graphene

Physical Review Letters, 2013
Using terahertz time-domain spectroscopy, the real part of optical conductivity [$ _{1}( )$] of twisted bilayer graphene was obtained at different temperatures (10 -- 300 K) in the frequency range 0.3 -- 3 THz. On top of a Drude-like response, we see a strong peak in $ _{1} ( )$ at $\sim$2.7 THz.
Zou, X., Shang, J., Leaw, J., Luo, Z., Luo, L., La-O-Vorakiat, C., Cheng, L., Cheong, S.A., Su, H., Zhu, J.-X., Liu, Y., Loh, K.P., Castro Neto, A.H., Yu, T., Chia, E.E.M.   +14 more
openaire   +6 more sources

Short Versus Long Range Exchange Interactions in Twisted Bilayer Graphene

Advanced Physics Research, 2023
This study discusses the effect of long‐range interactions within the self‐consistent Hartree‐Fock (HF) approximation in comparison to short‐range atomic Hubbard interactions on the band structure of twisted bilayer graphene (TBG) at charge neutrality ...
Alejandro Jimeno‐Pozo, Zachary A. H. Goodwin, Pierre A. Pantaleón, Valerio Vitale, Lennart Klebl, Dante M. Kennes, Arash A. Mostofi, Johannes Lischner, Francisco Guinea   +8 more
doaj   +1 more source

Acoustic twisted bilayer graphene

, 2020
Twisted van der Waals (vdW) heterostructures have recently emerged as an attractive platform to study tunable correlated electron systems. However, the quantum mechanical nature of vdW heterostructures makes their theoretical and experimental exploration laborious and expensive.
Gardezi, S. Minhal, Pirie, Harris, Dorrell, William, Hoffman, Jennifer E.   +3 more
openaire   +2 more sources

Optical absorption in twisted bilayer graphene [PDF]

Physical Review B, 2013
12 pages, 9 ...
Moon, Pilkyung, Koshino, Mikito
openaire   +2 more sources

Bistritzer–MacDonald dynamics in twisted bilayer graphene

Journal of Mathematical Physics, 2023
The Bistritzer–MacDonald (BM) model, introduced by Bistritzer and MacDonald [Proc. Natl. Acad. Sci. U. S. A. 108, 12233–12237 (2011); arXiv:1009.4203], attempts to capture electronic properties of twisted bilayer graphene (TBG), even at incommensurate twist angles, by using an effective periodic model over the bilayer moiré pattern.
Alexander B. Watson, Tianyu Kong, Allan H. MacDonald, Mitchell Luskin   +3 more
openaire   +3 more sources

Symmetry of superconducting correlations in displaced bilayers of graphene [PDF]

, 2019
Using a Green's function approach, we study phonon-mediated superconducting pairing symmetries that may arise in bilayer graphene where the monolayers are displaced in-plane with respect to each other. We consider a generic coupling potential between the
Alidoust, Mohammad, Jauho, Antti-Pekka, Willatzen, Morten   +2 more
core   +2 more sources

Bulk valley transport and Berry curvature spreading at the edge of flat bands

Nature Communications, 2020
Spontaneous symmetry breaking of flat bands in twisted graphene systems may lead to anomalous Hall effect with a precursor state which has not been observed. Here, the authors probe this precursor state by observing bulk valley current and large nonlocal
Subhajit Sinha, Pratap Chandra Adak, R. S. Surya Kanthi, Bheema Lingam Chittari, L. D. Varma Sangani, Kenji Watanabe, Takashi Taniguchi, Jeil Jung, Mandar M. Deshmukh   +8 more
doaj   +1 more source

Light Confinement in Twisted Single-Layer 2D+ Moiré Photonic Crystals and Bilayer Moiré Photonic Crystals

Photonics, 2023
Twisted photonic crystals are photonic analogs of twisted monolayer materials such as graphene and their optical property studies are still in their infancy.
Steve Kamau, Noah Hurley, Anupama B. Kaul, Jingbiao Cui, Yuankun Lin   +4 more
doaj   +1 more source

Electrically Controllable Magnetism in Twisted Bilayer Graphene [PDF]

Physical Review Letters, 2017
7 pages, 3 figures.
Gonzalez-Arraga, Luis A., Lado, J. L., Guinea, Francisco, San-Jose, Pablo   +3 more
openaire   +5 more sources

Imaging topological and correlated insulating states in twisted monolayer-bilayer graphene

Nature Communications, 2022
Twisted van der Waals structures represent a versatile platform to investigate topological and correlated electronic states. Here, the authors report the visualization of an electron crystal phase in twisted monolayer-bilayer graphene via scanning ...
Si-yu Li, Zhengwen Wang, Yucheng Xue, Yingbo Wang, Shihao Zhang, Jianpeng Liu, Zheng Zhu, Kenji Watanabe, Takashi Taniguchi, Hong-jun Gao, Yuhang Jiang, Jinhai Mao   +11 more
doaj   +1 more source